diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/asset_canvas/generation.rs b/apps/ai-game-creator-shell/src-tauri/src/project/asset_canvas/generation.rs
index b66561170..edc0b8b95 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/asset_canvas/generation.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/asset_canvas/generation.rs
@@ -821,6 +821,25 @@ fn validate_generation_draft_active(
     Ok(())
 }
 
+fn validate_generation_draft_for_public_phase(
+    ledger: &AssetCanvasGenerationLedger,
+    draft: &AssetCanvasDraft,
+) -> Result<(), String> {
+    if ledger.phase == GenerationLedgerPhase::AssetDurableCommitted
+        && draft.status == AssetCanvasDraftStatus::Committed
+    {
+        if draft.project_id != ledger.project_id
+            || draft.draft_id != ledger.draft_id
+            || draft.intent != ledger.intent
+            || draft.source_asset_id != ledger.source_asset_id
+        {
+            return Err("素材画布生成账本与草稿身份不一致".to_string());
+        }
+        return Ok(());
+    }
+    validate_generation_draft_active(ledger, draft)
+}
+
 fn ensure_generation_draft_active(
     root: &Path,
     ledger: &AssetCanvasGenerationLedger,
@@ -840,7 +859,7 @@ fn upsert_public_generation_record(
     let _lock = acquire_asset_canvas_draft_lock(root)?;
     let mut draft = read_asset_canvas_draft_locked(root, &ledger.project_id, &ledger.draft_id)?
         .ok_or_else(|| "素材画布草稿不存在".to_string())?;
-    validate_generation_draft_active(ledger, &draft)?;
+    validate_generation_draft_for_public_phase(ledger, &draft)?;
     let now = asset_canvas_now();
     let output_asset_id = ledger
         .commit_result