diff --git a/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/__tests__/builder.test.ts b/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/__tests__/builder.test.ts
index 78aaa40d..92c10463 100644
--- a/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/__tests__/builder.test.ts
+++ b/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/__tests__/builder.test.ts
@@ -156,6 +156,90 @@ describe('chat timeline builder', () => {
     }
   });
 
+  it('keeps completed memory compression rows immutable across repeated attempts', () => {
+    const items: ChatTimelineItem[] = [];
+    const metadata = {
+      roundId: 'round-1',
+      statusKey: 'memory-compression:round-1',
+    };
+
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      phase: 'started',
+      status: 'running',
+    });
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      compressed: true,
+      phase: 'completed',
+      status: 'done',
+    });
+    ChatTimelineBuilder.appendThinkingDelta(items, '继续处理', metadata);
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      phase: 'started',
+      status: 'running',
+    });
+
+    const runningStatuses = items.filter((item) => item.type === 'status');
+    expect(runningStatuses).toHaveLength(2);
+    expect(runningStatuses[0]).toMatchObject({
+      label: '已整理上下文',
+      status: 'done',
+      statusKey: 'memory-compression:round-1',
+    });
+    expect(runningStatuses[1]).toMatchObject({
+      label: '正在整理上下文',
+      status: 'running',
+      statusKey: 'memory-compression:round-1::occurrence:2',
+    });
+    const thinkingIndex = items.findIndex(
+      (item) =>
+        item.type === 'message' &&
+        item.parts.some(
+          (part) => part.type === 'thinking' && part.content === '继续处理',
+        ),
+    );
+    const currentStatus = runningStatuses[1];
+    if (!currentStatus) {
+      throw new Error('缺少第二次上下文整理状态');
+    }
+    expect(items.indexOf(currentStatus)).toBeGreaterThan(thinkingIndex);
+
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      compressed: true,
+      phase: 'completed',
+      status: 'done',
+    });
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      phase: 'started',
+      status: 'running',
+    });
+    ChatTimelineBuilder.upsertMemoryCompressionStatus(items, {
+      ...metadata,
+      compressed: false,
+      phase: 'completed',
+      status: 'done',
+    });
+
+    const completedStatuses = items.filter((item) => item.type === 'status');
+    expect(completedStatuses).toHaveLength(2);
+    expect(completedStatuses).toEqual([
+      expect.objectContaining({
+        label: '已整理上下文',
+        status: 'done',
+        statusKey: 'memory-compression:round-1',
+      }),
+      expect.objectContaining({
+        label: '已整理上下文',
+        status: 'done',
+        statusKey: 'memory-compression:round-1::occurrence:2',
+      }),
+    ]);
+  });
+
   it('updates one Skill invocation row in place and preserves Skill order', () => {
     const items: ChatTimelineItem[] = [];
 
diff --git a/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/builder.ts b/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/builder.ts
index a5e88ceb..adbfe002 100644
--- a/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/builder.ts
+++ b/easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/builder.ts
@@ -228,6 +228,31 @@ function findStatusItem(items: ChatTimelineItem[], statusKey: string) {
   );
 }
 
+function resolveStatusOccurrenceKey(
+  items: ChatTimelineItem[],
+  statusKey: string,
+  roundId?: string,
+) {
+  // 同一 Turn 可多次触发整理；只复用仍在运行的实例，避免改写已完成的历史状态。
+  const occurrencePrefix = `${statusKey}::occurrence:`;
+  const occurrences = items.filter(
+    (item): item is ChatTimelineStatusItem =>
+      item.type === 'status' &&
+      (item.statusKey === statusKey ||
+        item.statusKey.startsWith(occurrencePrefix)) &&
+      (!roundId || item.roundId === roundId),
+  );
+  const running = [...occurrences]
+    .reverse()
+    .find((item) => item.status === 'running');
+  if (running) {
+    return running.statusKey;
+  }
+  return occurrences.length === 0
+    ? statusKey
+    : `${occurrencePrefix}${occurrences.length + 1}`;
+}
+
 function removeStatusItem(items: ChatTimelineItem[], statusKey: string) {
   const index = items.findIndex(
     (item) => item.type === 'status' && item.statusKey === statusKey,
@@ -680,7 +705,11 @@ export const ChatTimelineBuilder = {
       payload?.status === 'done' || payload?.phase === 'completed'
         ? 'done'
         : 'running';
-    const statusKey = payload?.statusKey || 'memory-compression';
+    const statusKey = resolveStatusOccurrenceKey(
+      items,
+      payload?.statusKey || 'memory-compression',
+      payload?.roundId,
+    );
     finishAssistantMessage(items, false, payload?.roundId);
     if (status === 'done' && payload?.compressed === false) {
       removeStatusItem(items, statusKey);