diff --git a/frontend/src/components/chat/GeneratedImages.test.tsx b/frontend/src/components/chat/GeneratedImages.test.tsx
index ef6d2e06..318f6ad5 100644
--- a/frontend/src/components/chat/GeneratedImages.test.tsx
+++ b/frontend/src/components/chat/GeneratedImages.test.tsx
@@ -132,6 +132,7 @@ describe('GeneratedImages', () => {
     const card = screen.getByTestId('generated-image-pending');
     expect(card).toHaveStyle({ width: `${imageDisplayWidth(2, 3)}px` });
     expect(screen.getByRole('status')).toHaveTextContent('正在生成图片');
+    expect(screen.getByText('正在生成图片')).toHaveClass('sr-only');
     expect(screen.getByText('12 秒')).toBeInTheDocument();
 
     act(() => {
@@ -179,4 +180,17 @@ describe('collectPendingImageGenerations', () => {
     ]);
     expect(collectPendingImageGenerations(null, [])).toEqual([]);
   });
+
+  it('drops a failed card once a later generation replaces it', () => {
+    const failed = { status: 'failed' as const, resultSummary: { kind: 'generated_image', truncated: false, error_code: 'no_image_returned' } as never };
+    const retrying = runWith([call(failed), call({ toolCallId: 'call-2' })]);
+    expect(collectPendingImageGenerations(retrying, [])).toMatchObject([{ toolCallId: 'call-2', status: 'running' }]);
+
+    const retried = runWith([call(failed), call({
+      toolCallId: 'call-2',
+      status: 'success',
+      resultSummary: { kind: 'generated_image', truncated: false, file_id: 'file-1' } as never,
+    })]);
+    expect(collectPendingImageGenerations(retried, [block])).toEqual([]);
+  });
 });
diff --git a/frontend/src/components/chat/GeneratedImages.tsx b/frontend/src/components/chat/GeneratedImages.tsx
index 92699df6..34856d77 100644
--- a/frontend/src/components/chat/GeneratedImages.tsx
+++ b/frontend/src/components/chat/GeneratedImages.tsx
@@ -94,7 +94,7 @@ function PendingImageCard({ pending }: { pending: PendingImageGeneration }) {
         <ImageGenerationDots elapsedSeconds={elapsedSeconds} active={running} />
         <span
           className={running
-            ? 'absolute left-3 top-2.5 text-xs font-medium text-muted-foreground'
+            ? 'sr-only'
             : 'absolute inset-x-3 top-1/2 -translate-y-1/2 text-center text-sm text-muted-foreground'}
         >
           {label}
diff --git a/frontend/src/components/chat/generatedImageModel.ts b/frontend/src/components/chat/generatedImageModel.ts
index bf72f06f..04fbc791 100644
--- a/frontend/src/components/chat/generatedImageModel.ts
+++ b/frontend/src/components/chat/generatedImageModel.ts
@@ -57,33 +57,34 @@ export function collectPendingImageGenerations(
 ): PendingImageGeneration[] {
   if (!run) return [];
   const renderedFileIds = new Set(blocks.map(block => block.file_id));
+  const calls = run.steps.flatMap(step => step.toolCalls.filter(call => call.toolName === GENERATE_IMAGE_TOOL_NAME));
   const pending: PendingImageGeneration[] = [];
-  for (const step of run.steps) {
-    for (const call of step.toolCalls) {
-      if (call.toolName !== GENERATE_IMAGE_TOOL_NAME) continue;
-      const summary = call.resultSummary as (Record<string, unknown> | undefined);
-      const fileId = typeof summary?.file_id === 'string' ? summary.file_id : null;
-      let status: PendingImageStatus;
-      if (call.status === 'running') {
-        status = 'running';
-      } else if (call.status === 'success') {
-        if (!fileId || renderedFileIds.has(fileId)) continue;
-        status = 'running';
-      } else if (call.status === 'interrupted') {
-        status = 'interrupted';
-      } else {
-        status = 'failed';
-      }
-      const aspectRatio = typeof call.arguments?.aspect_ratio === 'string' ? call.arguments.aspect_ratio : '1:1';
-      pending.push({
-        toolCallId: call.toolCallId,
-        status,
-        aspectRatio,
-        startedAt: call.startedAt,
-        completedAt: call.completedAt,
-        errorCode: typeof summary?.error_code === 'string' ? summary.error_code : null,
-      });
+  calls.forEach((call, index) => {
+    const summary = call.resultSummary as (Record<string, unknown> | undefined);
+    const fileId = typeof summary?.file_id === 'string' ? summary.file_id : null;
+    let status: PendingImageStatus;
+    if (call.status === 'running') {
+      status = 'running';
+    } else if (call.status === 'success') {
+      if (!fileId || renderedFileIds.has(fileId)) return;
+      status = 'running';
+    } else if (index < calls.length - 1) {
+      // 失败或中断后又发起了生图（重试），由后一张卡片接替，不再保留失败卡片。
+      return;
+    } else if (call.status === 'interrupted') {
+      status = 'interrupted';
+    } else {
+      status = 'failed';
     }
-  }
+    const aspectRatio = typeof call.arguments?.aspect_ratio === 'string' ? call.arguments.aspect_ratio : '1:1';
+    pending.push({
+      toolCallId: call.toolCallId,
+      status,
+      aspectRatio,
+      startedAt: call.startedAt,
+      completedAt: call.completedAt,
+      errorCode: typeof summary?.error_code === 'string' ? summary.error_code : null,
+    });
+  });
   return pending;
 }