diff --git a/src/components/image-editor/ImageCanvasGenerationSubmissionModel.ts b/src/components/image-editor/ImageCanvasGenerationSubmissionModel.ts
index be9e4fe2d..aaef7ff65 100644
--- a/src/components/image-editor/ImageCanvasGenerationSubmissionModel.ts
+++ b/src/components/image-editor/ImageCanvasGenerationSubmissionModel.ts
@@ -2,6 +2,7 @@ import {
   CUSTOM_EDITOR_SCENE_STYLE_PRESET,
   DEFAULT_EDITOR_SCENE_STYLE_PRESET,
 } from '../../../packages/shared/src/contracts/editorScene';
+import type { EditorSceneGenerationInputs } from '../../../packages/shared/src/contracts/editorScene';
 import type {
   EditorBackgroundMusicGenerationInput,
   EditorCharacterAnimationGenerationInput,
@@ -75,6 +76,29 @@ export const EDITOR_SCENE_CUSTOM_STYLE_REQUIRED_ERROR = '请填写自定义画
 
 export const EDITOR_GENERATED_ASSET_LABEL_MAX_CHARS = 80;
 
+/**
+ * 场景生成接口的历史契约只接受字符串参数；画布配方则保留原生
+ * string | number | boolean 值，以便在素材元数据中无损回放。
+ */
+export function toEditorSceneGenerationInputs(
+  generationInputs: CanvasGenerationInputs,
+): EditorSceneGenerationInputs {
+  return {
+    fields: generationInputs.fields.map(({ title, value }) => ({
+      title,
+      value: String(value),
+    })),
+    references: generationInputs.references.map(
+      ({ title, label, refType, refId }) => ({
+        title,
+        label: label ?? '',
+        refType,
+        refId,
+      }),
+    ),
+  };
+}
+
 export function resolveGenerationAssetLabel(
   assetLabel: string | null | undefined,
   fallback: string,
@@ -628,7 +652,7 @@ export function buildImageGenerationSubmissionPlan({
               ),
             }
           : {}),
-        generationInputs,
+        generationInputs: toEditorSceneGenerationInputs(generationInputs),
       },
       result: {
         assetKind: 'scene',
diff --git a/src/components/image-editor/useImageCanvasGenerationSubmissionWorkflow.ts b/src/components/image-editor/useImageCanvasGenerationSubmissionWorkflow.ts
index 74d098a65..c041e80c7 100644
--- a/src/components/image-editor/useImageCanvasGenerationSubmissionWorkflow.ts
+++ b/src/components/image-editor/useImageCanvasGenerationSubmissionWorkflow.ts
@@ -2373,7 +2373,7 @@ export function useImageCanvasGenerationSubmissionWorkflow({
             generateEditorScene({
               ...sceneGenerationInput,
               projectId,
-              generationInputs: submissionPlan.result.generationInputs,
+              generationInputs: submissionPlan.input.generationInputs,
               assetFolderId,
               assetLabel: submissionPlan.result.title,
               ...(projectId && canvasCompletionPlaceholder