diff --git a/apps/admin-web/src/components/CustomArticleTab.vue b/apps/admin-web/src/components/CustomArticleTab.vue
index 05db7de..2fdf9e6 100644
--- a/apps/admin-web/src/components/CustomArticleTab.vue
+++ b/apps/admin-web/src/components/CustomArticleTab.vue
@@ -116,7 +116,7 @@ const deleteMutation = useMutation({
 const columns = computed<TableColumnsType<ArticleListItem>>(() => [
   { title: t("custom.article.titleColumn"), dataIndex: "title", key: "title", width: 340 },
   { title: t("custom.filters.promptRule"), dataIndex: "prompt_rule_name", key: "prompt_rule_name", width: 160 },
-  { title: t("custom.schedule.platform"), dataIndex: "platforms", key: "platforms", width: 180 },
+  { title: t("custom.schedule.autoPublishPlatforms"), dataIndex: "auto_publish_platforms", key: "auto_publish_platforms", width: 180 },
   { title: t("common.generateStatus"), dataIndex: "generate_status", key: "generate_status", width: 128 },
   { title: t("common.publishStatus"), dataIndex: "publish_status", key: "publish_status", width: 128 },
   { title: t("common.wordCount"), dataIndex: "word_count", key: "word_count", width: 100 },
@@ -319,8 +319,8 @@ onBeforeUnmount(() => {
         <template v-else-if="column.key === 'prompt_rule_name'">
           {{ record.prompt_rule_name || "--" }}
         </template>
-        <template v-else-if="column.key === 'platforms'">
-          {{ formatPublishPlatformList(record.platforms) }}
+        <template v-else-if="column.key === 'auto_publish_platforms'">
+          {{ formatPublishPlatformList(record.auto_publish_platforms) }}
         </template>
         <template v-else-if="column.key === 'generate_status'">
           <ArticleGenerateStatus :status="record.generate_status" />
diff --git a/apps/admin-web/src/components/InstantTaskTab.vue b/apps/admin-web/src/components/InstantTaskTab.vue
index c830419..e6d7009 100644
--- a/apps/admin-web/src/components/InstantTaskTab.vue
+++ b/apps/admin-web/src/components/InstantTaskTab.vue
@@ -80,7 +80,7 @@ const columns = computed<TableColumnsType<InstantTaskItem>>(() => [
   { title: t("custom.schedule.rule"), dataIndex: "prompt_rule_name", key: "prompt_rule_name", width: 180 },
   { title: t("custom.instant.executionStatus"), dataIndex: "status", key: "status", width: 140 },
   { title: t("custom.instant.executionTime"), dataIndex: "execution_time", key: "execution_time", width: 170 },
-  { title: t("custom.schedule.platform"), dataIndex: "platforms", key: "platforms", width: 220 },
+  { title: t("custom.schedule.autoPublishPlatforms"), dataIndex: "auto_publish_platforms", key: "auto_publish_platforms", width: 220 },
   { title: t("custom.task.generateCount"), dataIndex: "generate_count", key: "generate_count", width: 120 },
   { title: t("custom.instant.createdTime"), dataIndex: "created_at", key: "created_at", width: 170 },
   { title: t("common.actions"), key: "actions", width: 88, fixed: "right", align: "right" },
@@ -235,8 +235,8 @@ onBeforeUnmount(() => {
         <template v-else-if="column.key === 'execution_time'">
           {{ formatDateTime(record.execution_time) }}
         </template>
-        <template v-else-if="column.key === 'platforms'">
-          {{ formatPublishPlatformList(record.platforms) }}
+        <template v-else-if="column.key === 'auto_publish_platforms'">
+          {{ formatPublishPlatformList(record.auto_publish_platforms) }}
         </template>
         <template v-else-if="column.key === 'generate_count'">
           {{ record.generate_count || 1 }}
diff --git a/apps/admin-web/src/components/PublishArticleModal.vue b/apps/admin-web/src/components/PublishArticleModal.vue
index c84852a..de9bafc 100644
--- a/apps/admin-web/src/components/PublishArticleModal.vue
+++ b/apps/admin-web/src/components/PublishArticleModal.vue
@@ -21,9 +21,6 @@ import {
   publishStateLabel,
   type PublishAccountCard,
 } from "@/lib/publish-account-cards";
-import {
-  normalizePublishPlatformIds,
-} from "@/lib/publish-platforms";
 
 const props = defineProps<{
   open: boolean;
@@ -93,10 +90,8 @@ watch(
 
 const platformMap = computed(() => buildPublishPlatformMap(platformsQuery.data.value ?? []));
 
-const articlePlatformIds = computed(() => normalizePublishPlatformIds(detailQuery.data.value?.platforms ?? []));
-
 const accountCards = computed<PublishAccountCard[]>(() =>
-  buildPublishAccountCards(accountsQuery.data.value ?? [], platformMap.value, articlePlatformIds.value),
+  buildPublishAccountCards(accountsQuery.data.value ?? [], platformMap.value),
 );
 
 watch(
@@ -137,10 +132,7 @@ watchEffect(() => {
     return;
   }
 
-  const preferredPlatforms = new Set(articlePlatformIds.value);
-  selectedAccountIds.value = accountCards.value
-    .filter((card) => card.selectable && preferredPlatforms.has(card.platformId))
-    .map((card) => card.id);
+  selectedAccountIds.value = [];
   selectionHydrated.value = true;
 });
 
@@ -237,7 +229,6 @@ async function persistCoverIfNeeded(detail: ArticleDetail): Promise<ArticleDetai
   return articlesApi.update(detail.id, {
     title: detail.title?.trim() || t("article.untitled"),
     markdown_content: detail.markdown_content ?? "",
-    platforms: normalizePublishPlatformIds(detail.platforms ?? []),
     cover_asset_url: nextUrl || null,
     cover_image_asset_id: coverImageAssetId.value,
   });
diff --git a/apps/admin-web/src/components/ScheduleTaskTab.vue b/apps/admin-web/src/components/ScheduleTaskTab.vue
index b2df6db..8c6923e 100644
--- a/apps/admin-web/src/components/ScheduleTaskTab.vue
+++ b/apps/admin-web/src/components/ScheduleTaskTab.vue
@@ -16,6 +16,7 @@ import ScheduleTaskModal from "@/components/ScheduleTaskModal.vue";
 import { promptRulesApi, schedulesApi } from "@/lib/api";
 import { formatCronExecutionTime, formatDateTime } from "@/lib/display";
 import { formatError } from "@/lib/errors";
+import { formatPublishPlatformList } from "@/lib/publish-platforms";
 
 const queryClient = useQueryClient();
 const { t } = useI18n();
@@ -84,7 +85,7 @@ const columns = computed<TableColumnsType<ScheduleTask>>(() => [
   { title: t("custom.schedule.rule"), dataIndex: "prompt_rule_name", key: "prompt_rule_name", width: 180 },
   { title: t("custom.instant.executionStatus"), dataIndex: "status", key: "status", width: 140 },
   { title: t("custom.instant.executionTime"), dataIndex: "cron_expr", key: "cron_expr", width: 170 },
-  { title: t("custom.schedule.autoPublish"), dataIndex: "auto_publish", key: "auto_publish", width: 160 },
+  { title: t("custom.schedule.autoPublishPlatforms"), dataIndex: "auto_publish_platforms", key: "auto_publish_platforms", width: 200 },
   { title: t("custom.task.generateCount"), dataIndex: "generate_count", key: "generate_count", width: 120 },
   { title: t("custom.instant.createdTime"), dataIndex: "created_at", key: "created_at", width: 170 },
   { title: t("common.actions"), key: "actions", width: 140, fixed: "right", align: "right" },
@@ -222,11 +223,11 @@ function handleTableChange(nextPage: number, nextPageSize: number): void {
         <template v-else-if="column.key === 'cron_expr'">
           {{ formatCronExecutionTime(record.cron_expr) }}
         </template>
-        <template v-else-if="column.key === 'auto_publish'">
+        <template v-else-if="column.key === 'auto_publish_platforms'">
           <a-tag :color="record.auto_publish ? 'blue' : 'default'">
             {{
               record.auto_publish
-                ? t("custom.schedule.autoPublishAccountCount", { count: record.publish_account_ids?.length ?? 0 })
+                ? formatPublishPlatformList(record.auto_publish_platforms)
                 : t("custom.schedule.manualPublish")
             }}
           </a-tag>
diff --git a/apps/admin-web/src/i18n/messages/en-US.ts b/apps/admin-web/src/i18n/messages/en-US.ts
index 7bb74c1..89a5bb1 100644
--- a/apps/admin-web/src/i18n/messages/en-US.ts
+++ b/apps/admin-web/src/i18n/messages/en-US.ts
@@ -1290,9 +1290,9 @@ const enUS = {
       name: "Task name",
       rule: "Prompt rule",
       cron: "Frequency",
+      autoPublishPlatforms: "Auto publish platforms",
       autoPublish: "Auto publish",
       manualPublish: "Manual publish",
-      autoPublishAccountCount: "Auto · {count} accounts",
       nextRun: "Next run",
       startAt: "Start time",
       endAt: "End time",
diff --git a/apps/admin-web/src/i18n/messages/zh-CN.ts b/apps/admin-web/src/i18n/messages/zh-CN.ts
index 444e35a..0056f36 100644
--- a/apps/admin-web/src/i18n/messages/zh-CN.ts
+++ b/apps/admin-web/src/i18n/messages/zh-CN.ts
@@ -1300,9 +1300,9 @@ const zhCN = {
       name: "任务名称",
       rule: "关联规则",
       cron: "执行频率",
+      autoPublishPlatforms: "自动发布平台",
       autoPublish: "自动发布",
       manualPublish: "手动发布",
-      autoPublishAccountCount: "自动 · {count} 个账号",
       nextRun: "下次执行",
       startAt: "开始时间",
       endAt: "结束时间",
diff --git a/apps/admin-web/src/views/TemplatesView.vue b/apps/admin-web/src/views/TemplatesView.vue
index da23f92..16ffe16 100644
--- a/apps/admin-web/src/views/TemplatesView.vue
+++ b/apps/admin-web/src/views/TemplatesView.vue
@@ -161,7 +161,7 @@ const recentTemplateArticles = computed<ArticleListItem[]>(() =>
       prompt_rule_id: null,
       prompt_rule_name: null,
       generation_mode: article.generation_mode,
-      platforms: [],
+      auto_publish_platforms: [],
       generate_status: article.generate_status,
       publish_status: article.publish_status,
       title: article.title,
diff --git a/packages/shared-types/src/index.ts b/packages/shared-types/src/index.ts
index e81da90..829911e 100644
--- a/packages/shared-types/src/index.ts
+++ b/packages/shared-types/src/index.ts
@@ -557,7 +557,7 @@ export interface ArticleListItem {
   prompt_rule_id: number | null;
   prompt_rule_name: string | null;
   generation_mode: string | null;
-  platforms: string[];
+  auto_publish_platforms: string[];
   generate_status: string;
   publish_status: string;
   title: string | null;
@@ -582,7 +582,7 @@ export interface ArticleDetail {
   template_id: number | null;
   template_name: string | null;
   generation_mode: string | null;
-  platforms: string[];
+  auto_publish_platforms: string[];
   cover_asset_url: string | null;
   cover_image_asset_id: number | null;
   generate_status: string;
@@ -632,7 +632,6 @@ export interface GenerateImitationResponse {
 export interface UpdateArticleRequest {
   title: string;
   markdown_content: string;
-  platforms?: string[];
   cover_asset_url?: string | null;
   referenced_image_asset_ids?: number[];
   cover_image_asset_id?: number | null;
@@ -1448,6 +1447,7 @@ export interface ScheduleTask {
   cron_expr: string;
   auto_publish: boolean;
   publish_account_ids: string[];
+  auto_publish_platforms: string[];
   cover_asset_url: string | null;
   cover_image_asset_id: number | null;
   enable_web_search: boolean;
@@ -1534,7 +1534,7 @@ export interface InstantTaskItem {
   name: string;
   status: string;
   execution_time: string | null;
-  platforms: string[];
+  auto_publish_platforms: string[];
   generate_count: number;
   created_at: string;
 }
diff --git a/server/internal/tenant/app/article_service.go b/server/internal/tenant/app/article_service.go
index bb16369..0fd3dae 100644
--- a/server/internal/tenant/app/article_service.go
+++ b/server/internal/tenant/app/article_service.go
@@ -115,7 +115,7 @@ type ArticleListItem struct {
 	PromptRuleID           *int64    `json:"prompt_rule_id"`
 	PromptRuleName         *string   `json:"prompt_rule_name"`
 	GenerationMode         *string   `json:"generation_mode"`
-	Platforms              []string  `json:"platforms"`
+	AutoPublishPlatforms   []string  `json:"auto_publish_platforms"`
 	GenerateStatus         string    `json:"generate_status"`
 	PublishStatus          string    `json:"publish_status"`
 	Title                  *string   `json:"title"`
@@ -147,7 +147,7 @@ type ArticleDetailResponse struct {
 	TemplateID             *int64                 `json:"template_id"`
 	TemplateName           *string                `json:"template_name"`
 	GenerationMode         *string                `json:"generation_mode"`
-	Platforms              []string               `json:"platforms"`
+	AutoPublishPlatforms   []string               `json:"auto_publish_platforms"`
 	CoverAssetURL          *string                `json:"cover_asset_url"`
 	CoverImageAssetID      *int64                 `json:"cover_image_asset_id"`
 	GenerateStatus         string                 `json:"generate_status"`
@@ -355,7 +355,11 @@ func (s *ArticleService) loadArticles(ctx context.Context, tenantID int64, param
 		}
 		item.SourceType = dbSourceType
 		item.GenerationMode = resolveArticleGenerationMode(dbSourceType, inputParamsJSON)
-		item.Platforms = resolveArticlePlatforms(wizardStateJSON, inputParamsJSON)
+		autoPublishPlatforms, err := loadScheduleAutoPublishPlatforms(ctx, s.pool, tenantID, inputParamsJSON)
+		if err != nil {
+			return nil, response.ErrInternal(50010, "query_failed", "failed to resolve article auto publish platforms")
+		}
+		item.AutoPublishPlatforms = autoPublishPlatforms
 		item.SourceURL, item.SourceTitle = resolveArticleImitationSourceInfo(dbSourceType, wizardStateJSON, inputParamsJSON)
 		items = append(items, item)
 	}
@@ -407,7 +411,11 @@ func (s *ArticleService) loadArticleDetail(ctx context.Context, tenantID, articl
 		_ = json.Unmarshal(wizardStateJSON, &item.WizardState)
 	}
 	item.GenerationMode = resolveArticleGenerationMode(dbSourceType, inputParamsJSON)
-	item.Platforms = resolveArticlePlatforms(wizardStateJSON, inputParamsJSON)
+	autoPublishPlatforms, err := loadScheduleAutoPublishPlatforms(ctx, s.pool, tenantID, inputParamsJSON)
+	if err != nil {
+		return nil, false, response.ErrInternal(50010, "query_failed", "failed to resolve article auto publish platforms")
+	}
+	item.AutoPublishPlatforms = autoPublishPlatforms
 	item.SourceURL, item.SourceTitle = resolveArticleImitationSourceInfo(dbSourceType, wizardStateJSON, inputParamsJSON)
 	item.CoverAssetURL = resolveArticleCoverAssetURL(wizardStateJSON)
 	item.CoverImageAssetID = resolveArticleCoverImageAssetID(wizardStateJSON)
@@ -495,7 +503,6 @@ func (s *ArticleService) Create(ctx context.Context, req CreateArticleRequest) (
 type UpdateArticleRequest struct {
 	Title                   string             `json:"title"`
 	MarkdownContent         string             `json:"markdown_content"`
-	Platforms               []string           `json:"platforms"`
 	CoverAssetURL           *string            `json:"cover_asset_url"`
 	ReferencedImageAssetIDs []int64            `json:"referenced_image_asset_ids"`
 	CoverImageAssetID       NullableInt64Input `json:"cover_image_asset_id"`
@@ -577,7 +584,6 @@ func (s *ArticleService) Update(ctx context.Context, id int64, req UpdateArticle
 	nextWizardStateJSON, err := mergeArticleWizardState(
 		wizardStateJSON,
 		title,
-		req.Platforms,
 		req.CoverAssetURL,
 		resolvedCoverImageAssetInput,
 	)
diff --git a/server/internal/tenant/app/instant_task_service.go b/server/internal/tenant/app/instant_task_service.go
index 1a8282f..b8518b7 100644
--- a/server/internal/tenant/app/instant_task_service.go
+++ b/server/internal/tenant/app/instant_task_service.go
@@ -31,16 +31,16 @@ type InstantTaskListParams struct {
 }
 
 type InstantTaskResponse struct {
-	ID             int64    `json:"id"`
-	ArticleID      *int64   `json:"article_id"`
-	PromptRuleID   *int64   `json:"prompt_rule_id"`
-	PromptRuleName *string  `json:"prompt_rule_name"`
-	Name           string   `json:"name"`
-	Status         string   `json:"status"`
-	ExecutionTime  *string  `json:"execution_time"`
-	Platforms      []string `json:"platforms"`
-	GenerateCount  int      `json:"generate_count"`
-	CreatedAt      string   `json:"created_at"`
+	ID                   int64    `json:"id"`
+	ArticleID            *int64   `json:"article_id"`
+	PromptRuleID         *int64   `json:"prompt_rule_id"`
+	PromptRuleName       *string  `json:"prompt_rule_name"`
+	Name                 string   `json:"name"`
+	Status               string   `json:"status"`
+	ExecutionTime        *string  `json:"execution_time"`
+	AutoPublishPlatforms []string `json:"auto_publish_platforms"`
+	GenerateCount        int      `json:"generate_count"`
+	CreatedAt            string   `json:"created_at"`
 }
 
 type InstantTaskListResponse struct {
@@ -123,7 +123,11 @@ func (s *InstantTaskService) List(ctx context.Context, params InstantTaskListPar
 
 		item.ExecutionTime = stringPtrFromDBValue(executionAt)
 		item.CreatedAt = fmt.Sprintf("%v", createdAt)
-		item.Platforms = resolveArticlePlatforms(nil, inputParamsJSON)
+		autoPublishPlatforms, err := loadScheduleAutoPublishPlatforms(ctx, s.pool, actor.TenantID, inputParamsJSON)
+		if err != nil {
+			return nil, response.ErrInternal(50010, "query_failed", "failed to resolve instant task auto publish platforms")
+		}
+		item.AutoPublishPlatforms = autoPublishPlatforms
 		item.GenerateCount = 1
 
 		if len(inputParamsJSON) > 0 {
diff --git a/server/internal/tenant/app/prompt_generate_service.go b/server/internal/tenant/app/prompt_generate_service.go
index 78f3fec..7f382eb 100644
--- a/server/internal/tenant/app/prompt_generate_service.go
+++ b/server/internal/tenant/app/prompt_generate_service.go
@@ -343,7 +343,7 @@ func (s *PromptRuleGenerationService) enqueuePromptRuleGeneration(ctx context.Co
 		coverImageAssetID.Set = true
 		coverImageAssetID.Value = &rawCoverImageAssetID
 	}
-	wizardStateJSON, _ := mergeArticleWizardState(nil, promptRuleGeneratingTitlePlaceholder, nil, coverAssetURL, coverImageAssetID)
+	wizardStateJSON, _ := mergeArticleWizardState(nil, promptRuleGeneratingTitlePlaceholder, coverAssetURL, coverImageAssetID)
 
 	tx, err := s.pool.Begin(ctx)
 	if err != nil {
diff --git a/server/internal/tenant/app/publish_platforms.go b/server/internal/tenant/app/publish_platforms.go
index bbf90b0..2d8f867 100644
--- a/server/internal/tenant/app/publish_platforms.go
+++ b/server/internal/tenant/app/publish_platforms.go
@@ -1,9 +1,12 @@
 package app
 
 import (
+	"context"
 	"encoding/json"
 	"strconv"
 	"strings"
+
+	"github.com/jackc/pgx/v5"
 )
 
 func normalizePlatformIDs(platformIDs []string) []string {
@@ -31,52 +34,79 @@ func normalizePlatformIDs(platformIDs []string) []string {
 	return normalized
 }
 
-func parsePlatformIDs(value string) []string {
-	if strings.TrimSpace(value) == "" {
-		return nil
-	}
-	return normalizePlatformIDs(strings.Split(value, ","))
+type scheduleAutoPublishPlatformQuerier interface {
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
 }
 
-func serializePlatformIDs(platformIDs []string) string {
-	normalized := normalizePlatformIDs(platformIDs)
-	if len(normalized) == 0 {
-		return ""
-	}
-	return strings.Join(normalized, ",")
-}
-
-func resolveArticlePlatforms(wizardStateJSON, inputParamsJSON []byte) []string {
-	if platforms := extractPlatformsFromJSONPayload(wizardStateJSON); len(platforms) > 0 {
-		return platforms
-	}
-	if platforms := extractPlatformsFromJSONPayload(inputParamsJSON); len(platforms) > 0 {
-		return platforms
-	}
-	return []string{}
-}
-
-func extractPlatformsFromJSONPayload(raw []byte) []string {
-	if len(raw) == 0 {
-		return nil
+func loadScheduleAutoPublishPlatforms(
+	ctx context.Context,
+	db scheduleAutoPublishPlatformQuerier,
+	tenantID int64,
+	inputParamsJSON []byte,
+) ([]string, error) {
+	if db == nil || tenantID <= 0 || len(inputParamsJSON) == 0 {
+		return []string{}, nil
 	}
 
 	var payload map[string]interface{}
-	if err := json.Unmarshal(raw, &payload); err != nil {
-		return nil
+	if err := json.Unmarshal(inputParamsJSON, &payload); err != nil {
+		return []string{}, nil
+	}
+	if !extractBool(payload, "schedule_auto_publish") {
+		return []string{}, nil
 	}
 
-	if platforms := normalizePlatformsFromValue(payload["platforms"]); len(platforms) > 0 {
-		return platforms
-	}
-	if platforms := normalizePlatformsFromValue(payload["target_platforms"]); len(platforms) > 0 {
-		return platforms
+	accountIDs := normalizeSchedulePublishAccountIDs(extractStringList(payload["schedule_publish_account_ids"], 64))
+	if len(accountIDs) == 0 {
+		return []string{}, nil
 	}
 
-	if targetPlatform, ok := payload["target_platform"].(string); ok {
-		return parsePlatformIDs(targetPlatform)
+	return loadPublishAccountPlatformsByIDs(ctx, db, tenantID, accountIDs)
+}
+
+func loadPublishAccountPlatformsByIDs(
+	ctx context.Context,
+	db scheduleAutoPublishPlatformQuerier,
+	tenantID int64,
+	accountIDs []string,
+) ([]string, error) {
+	accountIDs = normalizeSchedulePublishAccountIDs(accountIDs)
+	if db == nil || tenantID <= 0 || len(accountIDs) == 0 {
+		return []string{}, nil
 	}
-	return nil
+
+	rows, err := db.Query(ctx, `
+		SELECT DISTINCT platform_id
+		FROM platform_accounts
+		WHERE tenant_id = $1
+		  AND desktop_id::text = ANY($2::text[])
+		  AND deleted_at IS NULL
+		ORDER BY platform_id
+	`, tenantID, accountIDs)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	platformIDs := make([]string, 0, len(accountIDs))
+	for rows.Next() {
+		var platformID string
+		if err := rows.Scan(&platformID); err != nil {
+			return nil, err
+		}
+		platformIDs = append(platformIDs, platformID)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return emptyStringSliceIfNil(normalizePlatformIDs(platformIDs)), nil
+}
+
+func emptyStringSliceIfNil(values []string) []string {
+	if values == nil {
+		return []string{}
+	}
+	return values
 }
 
 func resolveArticleCoverAssetURL(wizardStateJSON []byte) *string {
@@ -146,51 +176,21 @@ func extractInt64FromJSONPayload(raw []byte, key string) (int64, bool) {
 	}
 }
 
-func normalizePlatformsFromValue(raw interface{}) []string {
-	switch typed := raw.(type) {
-	case nil:
-		return nil
-	case string:
-		return parsePlatformIDs(typed)
-	case []string:
-		return normalizePlatformIDs(typed)
-	case []interface{}:
-		values := make([]string, 0, len(typed))
-		for _, item := range typed {
-			value, ok := item.(string)
-			if !ok {
-				continue
-			}
-			values = append(values, value)
-		}
-		return normalizePlatformIDs(values)
-	default:
-		return nil
-	}
-}
-
-func mergeArticleWizardState(raw []byte, title string, platforms []string, coverAssetURL *string, coverImageAssetID NullableInt64Input) ([]byte, error) {
+func mergeArticleWizardState(raw []byte, title string, coverAssetURL *string, coverImageAssetID NullableInt64Input) ([]byte, error) {
 	state := make(map[string]interface{})
 	if len(raw) > 0 {
 		_ = json.Unmarshal(raw, &state)
 	}
 
+	delete(state, "platforms")
+	delete(state, "target_platforms")
+	delete(state, "target_platform")
+
 	trimmedTitle := strings.TrimSpace(title)
 	if trimmedTitle != "" {
 		state["title"] = trimmedTitle
 	}
 
-	if platforms != nil {
-		normalized := normalizePlatformIDs(platforms)
-		if len(normalized) == 0 {
-			delete(state, "platforms")
-			delete(state, "target_platform")
-		} else {
-			state["platforms"] = normalized
-			state["target_platform"] = strings.Join(normalized, ",")
-		}
-	}
-
 	if coverAssetURL != nil {
 		trimmedCoverURL := strings.TrimSpace(*coverAssetURL)
 		if trimmedCoverURL == "" {
diff --git a/server/internal/tenant/app/schedule_task_service.go b/server/internal/tenant/app/schedule_task_service.go
index 3bcdce2..6f302d1 100644
--- a/server/internal/tenant/app/schedule_task_service.go
+++ b/server/internal/tenant/app/schedule_task_service.go
@@ -54,26 +54,27 @@ type ScheduleTaskRequest struct {
 }
 
 type ScheduleTaskResponse struct {
-	ID                int64    `json:"id"`
-	WorkspaceID       *int64   `json:"workspace_id"`
-	PromptRuleID      int64    `json:"prompt_rule_id"`
-	PromptRuleName    *string  `json:"prompt_rule_name"`
-	BrandID           *int64   `json:"brand_id"`
-	BrandName         *string  `json:"brand_name"`
-	Name              string   `json:"name"`
-	CronExpr          string   `json:"cron_expr"`
-	AutoPublish       bool     `json:"auto_publish"`
-	PublishAccountIDs []string `json:"publish_account_ids"`
-	CoverAssetURL     *string  `json:"cover_asset_url"`
-	CoverImageAssetID *int64   `json:"cover_image_asset_id"`
-	EnableWebSearch   bool     `json:"enable_web_search"`
-	GenerateCount     int      `json:"generate_count"`
-	StartAt           *string  `json:"start_at"`
-	EndAt             *string  `json:"end_at"`
-	NextRunAt         *string  `json:"next_run_at"`
-	Status            string   `json:"status"`
-	CreatedAt         string   `json:"created_at"`
-	UpdatedAt         string   `json:"updated_at"`
+	ID                   int64    `json:"id"`
+	WorkspaceID          *int64   `json:"workspace_id"`
+	PromptRuleID         int64    `json:"prompt_rule_id"`
+	PromptRuleName       *string  `json:"prompt_rule_name"`
+	BrandID              *int64   `json:"brand_id"`
+	BrandName            *string  `json:"brand_name"`
+	Name                 string   `json:"name"`
+	CronExpr             string   `json:"cron_expr"`
+	AutoPublish          bool     `json:"auto_publish"`
+	PublishAccountIDs    []string `json:"publish_account_ids"`
+	AutoPublishPlatforms []string `json:"auto_publish_platforms"`
+	CoverAssetURL        *string  `json:"cover_asset_url"`
+	CoverImageAssetID    *int64   `json:"cover_image_asset_id"`
+	EnableWebSearch      bool     `json:"enable_web_search"`
+	GenerateCount        int      `json:"generate_count"`
+	StartAt              *string  `json:"start_at"`
+	EndAt                *string  `json:"end_at"`
+	NextRunAt            *string  `json:"next_run_at"`
+	Status               string   `json:"status"`
+	CreatedAt            string   `json:"created_at"`
+	UpdatedAt            string   `json:"updated_at"`
 }
 
 type ScheduleTaskListParams struct {
@@ -206,7 +207,7 @@ func (s *ScheduleTaskService) Create(ctx context.Context, req ScheduleTaskReques
 	return &ScheduleTaskResponse{
 		ID: id, WorkspaceID: &workspaceID, PromptRuleID: req.PromptRuleID, BrandID: req.BrandID,
 		Name: req.Name, CronExpr: req.CronExpr, AutoPublish: publishConfig.AutoPublish,
-		PublishAccountIDs: publishConfig.AccountIDs, CoverAssetURL: publishConfig.CoverAssetURL,
+		PublishAccountIDs: publishConfig.AccountIDs, AutoPublishPlatforms: publishConfig.PlatformIDs, CoverAssetURL: publishConfig.CoverAssetURL,
 		CoverImageAssetID: publishConfig.CoverImageAssetID, EnableWebSearch: enableWebSearch,
 		GenerateCount: generateCount,
 		Status:        status, CreatedAt: fmt.Sprintf("%v", createdAt),
@@ -400,6 +401,9 @@ func (s *ScheduleTaskService) loadScheduleTasks(ctx context.Context, tenantID in
 		if err != nil {
 			return nil, err
 		}
+		if err := s.populateScheduleAutoPublishPlatforms(ctx, tenantID, &item); err != nil {
+			return nil, err
+		}
 		items = append(items, item)
 	}
 	return &ScheduleTaskListResponse{Items: items, Total: total}, nil
@@ -425,9 +429,24 @@ func (s *ScheduleTaskService) loadScheduleTaskDetail(ctx context.Context, tenant
 		}
 		return nil, false, err
 	}
+	if err := s.populateScheduleAutoPublishPlatforms(ctx, tenantID, &item); err != nil {
+		return nil, false, err
+	}
 	return &item, true, nil
 }
 
+func (s *ScheduleTaskService) populateScheduleAutoPublishPlatforms(ctx context.Context, tenantID int64, item *ScheduleTaskResponse) error {
+	if item == nil || !item.AutoPublish {
+		return nil
+	}
+	platformIDs, err := loadPublishAccountPlatformsByIDs(ctx, s.pool, tenantID, item.PublishAccountIDs)
+	if err != nil {
+		return response.ErrInternal(50010, "query_failed", "failed to resolve schedule auto publish platforms")
+	}
+	item.AutoPublishPlatforms = platformIDs
+	return nil
+}
+
 func scanScheduleTaskResponse(scanner interface {
 	Scan(dest ...interface{}) error
 }) (ScheduleTaskResponse, error) {
@@ -480,6 +499,7 @@ func (s *ScheduleTaskService) ensurePromptRuleExists(ctx context.Context, tenant
 type scheduleAutoPublishConfig struct {
 	AutoPublish       bool
 	AccountIDs        []string
+	PlatformIDs       []string
 	AccountIDsJSON    []byte
 	CoverAssetURL     *string
 	CoverImageAssetID *int64
@@ -514,6 +534,7 @@ func (s *ScheduleTaskService) normalizeAutoPublishConfig(ctx context.Context, ac
 	if err != nil {
 		return config, err
 	}
+	config.PlatformIDs = normalizePlatformIDs(platformIDs)
 	if schedulePublishPlatformsRequireCover(platformIDs) && coverURL == "" {
 		return config, response.ErrBadRequest(40025, "cover_required", "selected publish accounts require cover_asset_url")
 	}
diff --git a/server/migrations/20260501103000_remove_legacy_article_platform_json.down.sql b/server/migrations/20260501103000_remove_legacy_article_platform_json.down.sql
new file mode 100644
index 0000000..bc820b4
--- /dev/null
+++ b/server/migrations/20260501103000_remove_legacy_article_platform_json.down.sql
@@ -0,0 +1 @@
+-- Legacy article target platform JSON keys are intentionally not restored.
diff --git a/server/migrations/20260501103000_remove_legacy_article_platform_json.up.sql b/server/migrations/20260501103000_remove_legacy_article_platform_json.up.sql
new file mode 100644
index 0000000..facac8e
--- /dev/null
+++ b/server/migrations/20260501103000_remove_legacy_article_platform_json.up.sql
@@ -0,0 +1,11 @@
+UPDATE articles
+SET wizard_state_json = wizard_state_json - 'platforms' - 'target_platforms' - 'target_platform',
+    updated_at = NOW()
+WHERE wizard_state_json IS NOT NULL
+  AND wizard_state_json ?| ARRAY['platforms', 'target_platforms', 'target_platform'];
+
+UPDATE generation_tasks
+SET input_params_json = input_params_json - 'platforms' - 'target_platforms' - 'target_platform',
+    updated_at = NOW()
+WHERE input_params_json IS NOT NULL
+  AND input_params_json ?| ARRAY['platforms', 'target_platforms', 'target_platform'];