diff --git a/CHANGELOG.md b/CHANGELOG.md
index 457fb8fac..9bd2517e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- TUI/chat log: reuse the active assistant message component for the same streaming run so `openclaw tui` no longer renders duplicate assistant replies. (#35364) Thanks @lisitan.
 - macOS/Reminders: add the missing `NSRemindersUsageDescription` to the bundled app so `apple-reminders` can trigger the system permission prompt from OpenClaw.app. (#8559) Thanks @dinakars777.
 - iMessage/self-chat echo dedupe: drop reflected duplicate copies only when a matching `is_from_me` event was just seen for the same chat, text, and `created_at`, preventing self-chat loops without broad text-only suppression. Related to #32166. (#38440) Thanks @vincentkoc.
 
diff --git a/src/tui/components/chat-log.test.ts b/src/tui/components/chat-log.test.ts
index 02607568b..b81740a2e 100644
--- a/src/tui/components/chat-log.test.ts
+++ b/src/tui/components/chat-log.test.ts
@@ -29,6 +29,17 @@ describe("ChatLog", () => {
     expect(rendered).toContain("recreated");
   });
 
+  it("does not append duplicate assistant components when a run is started twice", () => {
+    const chatLog = new ChatLog(40);
+    chatLog.startAssistant("first", "run-dup");
+    chatLog.startAssistant("second", "run-dup");
+
+    const rendered = chatLog.render(120).join("\n");
+    expect(rendered).toContain("second");
+    expect(rendered).not.toContain("first");
+    expect(chatLog.children.length).toBe(1);
+  });
+
   it("drops stale tool references when old components are pruned", () => {
     const chatLog = new ChatLog(20);
     chatLog.startTool("tool-1", "read_file", { path: "a.txt" });
diff --git a/src/tui/components/chat-log.ts b/src/tui/components/chat-log.ts
index 4ddf1d5b1..76ac7d936 100644
--- a/src/tui/components/chat-log.ts
+++ b/src/tui/components/chat-log.ts
@@ -65,8 +65,14 @@ export class ChatLog extends Container {
   }
 
   startAssistant(text: string, runId?: string) {
+    const effectiveRunId = this.resolveRunId(runId);
+    const existing = this.streamingRuns.get(effectiveRunId);
+    if (existing) {
+      existing.setText(text);
+      return existing;
+    }
     const component = new AssistantMessageComponent(text);
-    this.streamingRuns.set(this.resolveRunId(runId), component);
+    this.streamingRuns.set(effectiveRunId, component);
     this.append(component);
     return component;
   }