diff --git a/src/components/image-editor/model3d-generation/Model3dGenerationModal.tsx b/src/components/image-editor/model3d-generation/Model3dGenerationModal.tsx
index e3cb7f0b2..9ada94bc4 100644
--- a/src/components/image-editor/model3d-generation/Model3dGenerationModal.tsx
+++ b/src/components/image-editor/model3d-generation/Model3dGenerationModal.tsx
@@ -80,7 +80,9 @@ export function Model3dGenerationModal({
   // 幂等键 = 代次 + 请求内容指纹，同键同请求只会拿回原来那个终态 operation。
   // 所以失败态下的任何提交（主按钮或「重试」）都要开新一代，否则点下去只是重现同一次失败；
   // 参数一改本来就会换代号次，这里补的是「不改参数直接再点一次」这条路。
-  const submitDialog =
+  // 代次只在点击那一刻铸：写在渲染体里会让每次重渲染（含 StrictMode 双渲染）都换一个随机值，
+  // 渲染结果不确定，也和「这一次点击」对不上。
+  const resolveSubmitDialog = () =>
     dialog.status === 'failed' ? refreshModel3dAttemptNonce(dialog) : dialog;
 
   // 每次都新建数组会让上面的 dismiss effect 每次渲染都重挂监听；ref 对象本身是稳定的。
@@ -131,7 +133,7 @@ export function Model3dGenerationModal({
           className="image-canvas-editor__generation-submit"
           disabled={!canSubmit}
           aria-label={MODEL3D_GENERATION_SUBMIT_LABEL}
-          onClick={() => onSubmit(submitDialog)}
+          onClick={() => onSubmit(resolveSubmitDialog())}
         >
           {isGenerating ? (
             '生成中'
@@ -152,7 +154,7 @@ export function Model3dGenerationModal({
             size="xs"
             shape="pill"
             aria-label="重试生成 3D 模型"
-            onClick={() => onSubmit(submitDialog)}
+            onClick={() => onSubmit(resolveSubmitDialog())}
           >
             重试
           </PlatformActionButton>