diff --git a/components/agents/AgentGenerationWorkspaceDarkV2.tsx b/components/agents/AgentGenerationWorkspaceDarkV2.tsx
index 9f4a59dc1..e64a5e5c7 100644
--- a/components/agents/AgentGenerationWorkspaceDarkV2.tsx
+++ b/components/agents/AgentGenerationWorkspaceDarkV2.tsx
@@ -111,6 +111,47 @@ interface AgentModeReferenceSearchResponse {
   };
 }
 
+function areImageGenerationParamsEqual(
+  left: ImageGenerationParams,
+  right: ImageGenerationParams
+) {
+  return (
+    left.aspectRatio === right.aspectRatio &&
+    left.imageSize === right.imageSize &&
+    (left.imageCount || 1) === (right.imageCount || 1) &&
+    left.size === right.size &&
+    left.negativePrompt === right.negativePrompt &&
+    left.promptExtend === right.promptExtend &&
+    left.watermark === right.watermark &&
+    left.seed === right.seed
+  );
+}
+
+function arePickedAttachmentsEqual(
+  left: Array<PickedAttachment | null>,
+  right: Array<PickedAttachment | null>
+) {
+  if (left === right) return true;
+  if (left.length !== right.length) return false;
+
+  for (let index = 0; index < left.length; index += 1) {
+    const leftItem = left[index];
+    const rightItem = right[index];
+    if (!leftItem && !rightItem) continue;
+    if (!leftItem || !rightItem) return false;
+    if (
+      leftItem.url !== rightItem.url ||
+      leftItem.name !== rightItem.name ||
+      leftItem.contentType !== rightItem.contentType ||
+      leftItem.assetId !== rightItem.assetId
+    ) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
 type ToolStepKey =
   | "preset"
   | "brand-model"
@@ -551,15 +592,24 @@ export function AgentGenerationWorkspaceDarkV2({
 
   useEffect(() => {
     if (normalizedIncomingWorkspaceState.selectedModelId) {
-      setSelectedModelId(normalizedIncomingWorkspaceState.selectedModelId);
+      const nextModelId = normalizedIncomingWorkspaceState.selectedModelId;
+      setSelectedModelId((current) =>
+        current === nextModelId ? current : nextModelId
+      );
       return;
     }
     if (selectedAgentPreset?.defaultModelId) {
-      setSelectedModelId(selectedAgentPreset.defaultModelId);
+      const nextModelId = selectedAgentPreset.defaultModelId;
+      setSelectedModelId((current) =>
+        current === nextModelId ? current : nextModelId
+      );
       return;
     }
     if (modelsData?.defaultModelId) {
-      setSelectedModelId(modelsData.defaultModelId);
+      const nextModelId = modelsData.defaultModelId;
+      setSelectedModelId((current) =>
+        current === nextModelId ? current : nextModelId
+      );
     }
   }, [
     modelsData?.defaultModelId,
@@ -570,7 +620,7 @@ export function AgentGenerationWorkspaceDarkV2({
   // 初始化附件
   useEffect(() => {
     if (!hasAgentUploadSlots) {
-      setAttachments([]);
+      setAttachments((current) => (current.length === 0 ? current : []));
       return;
     }
     const nextSlots: Array<PickedAttachment | null> = Array.from(
@@ -603,7 +653,7 @@ export function AgentGenerationWorkspaceDarkV2({
           result[index] = nextSlots[index] as PickedAttachment;
         }
       }
-      return result;
+      return arePickedAttachmentsEqual(current, result) ? current : result;
     });
   }, [
     agentUploadSlots.length,
@@ -647,7 +697,7 @@ export function AgentGenerationWorkspaceDarkV2({
         slots[modelSlotIndex] = null;
       }
 
-      return slots;
+      return arePickedAttachmentsEqual(current, slots) ? current : slots;
     });
 
     lastSyncedBrandModelUrlRef.current = nextAttachment?.url || null;
@@ -812,8 +862,8 @@ export function AgentGenerationWorkspaceDarkV2({
     }
     workspaceStateSignatureRef.current = incomingSignature;
     setInput(normalizedIncomingWorkspaceState.input);
-    setAttachments(
-      normalizedIncomingWorkspaceState.attachments.map((item) =>
+    setAttachments((current) => {
+      const nextAttachments = normalizedIncomingWorkspaceState.attachments.map((item) =>
         item
           ? {
               url: item.url,
@@ -822,13 +872,20 @@ export function AgentGenerationWorkspaceDarkV2({
               assetId: item.assetId || undefined,
             }
           : null
-      )
-    );
-    setSelectedModelId(normalizedIncomingWorkspaceState.selectedModelId || "auto");
-    setImageParams({
-      aspectRatio: normalizedIncomingWorkspaceState.imageParams?.aspectRatio || "auto",
-      imageSize: normalizedIncomingWorkspaceState.imageParams?.imageSize || "2K",
-      imageCount: normalizedIncomingWorkspaceState.imageParams?.imageCount || 1,
+      );
+      return arePickedAttachmentsEqual(current, nextAttachments) ? current : nextAttachments;
+    });
+    setSelectedModelId((current) => {
+      const nextModelId = normalizedIncomingWorkspaceState.selectedModelId || "auto";
+      return current === nextModelId ? current : nextModelId;
+    });
+    setImageParams((current) => {
+      const nextParams = {
+        aspectRatio: normalizedIncomingWorkspaceState.imageParams?.aspectRatio || "auto",
+        imageSize: normalizedIncomingWorkspaceState.imageParams?.imageSize || "2K",
+        imageCount: normalizedIncomingWorkspaceState.imageParams?.imageCount || 1,
+      };
+      return areImageGenerationParamsEqual(current, nextParams) ? current : nextParams;
     });
   }, [normalizedIncomingWorkspaceState]);
 
diff --git a/components/image-params-bar.tsx b/components/image-params-bar.tsx
index 0f5a97a2c..d1ae79b38 100644
--- a/components/image-params-bar.tsx
+++ b/components/image-params-bar.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect } from "react";
+import { useEffect, useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Link2, Scan, SlidersHorizontal, Sparkles } from "lucide-react";
 import { cn } from "@/lib/utils";
@@ -89,6 +89,28 @@ export function ImageParamsBar({
   showInlineDivider = true,
   imageGenConfig,
 }: ImageParamsBarProps) {
+  const hasNormalizedParamDiff = (
+    source: Partial<ImageGenerationParams> | undefined,
+    normalized: ImageGenerationParams
+  ) => {
+    if (!source) return false;
+
+    const keys: Array<keyof ImageGenerationParams> = [
+      "aspectRatio",
+      "imageSize",
+      "imageCount",
+      "size",
+      "negativePrompt",
+      "promptExtend",
+      "watermark",
+      "seed",
+    ];
+
+    return keys.some(
+      (key) => source[key] !== undefined && source[key] !== normalized[key]
+    );
+  };
+
   const getImageCountOptions = () => {
     // RUXA 当前按单图任务处理（优先级最高）
     if (providerType === "ruxa-image" || providerType === "openai-image" || providerType === "midjourney") {
@@ -228,33 +250,32 @@ export function ImageParamsBar({
     );
   };
 
-  // 🆕 监听 initialParams 变化，确保状态同步
+  // 仅同步展示状态；只有确实发生参数校正时才回写父层，避免和父组件互相触发更新。
   useEffect(() => {
-    console.log("[ImageParamsBar] Mount/Update - initialParams:", initialParams);
-    const rawParams = {
-      aspectRatio: "auto",
-      imageSize: "2K",
-      imageCount: 1,
-      promptExtend: true,
-      watermark: false,
-      ...(initialParams || {}),
-    } as ImageGenerationParams;
     const nextParams = buildBaseParams(initialParams);
     setParams((prevParams) => (isSameParams(prevParams, nextParams) ? prevParams : nextParams));
-    if (initialParams !== undefined && onParamsChange && !isSameParams(rawParams, nextParams)) {
+    if (onParamsChange && hasNormalizedParamDiff(initialParams, nextParams)) {
       onParamsChange(nextParams);
     }
-  }, [initialParams, providerType, imageGenConfig?.maxImages, imageGenConfig?.supports1K, imageGenConfig?.supports2K, imageGenConfig?.supports4K]);
+  }, [
+    imageGenConfig?.maxImages,
+    imageGenConfig?.supports1K,
+    imageGenConfig?.supports2K,
+    imageGenConfig?.supports4K,
+    initialParams,
+    onParamsChange,
+    providerType,
+  ]);
 
   const updateParam = <K extends keyof ImageGenerationParams>(
     key: K,
     value: ImageGenerationParams[K]
   ) => {
     const newParams = clampParamsByProvider({ ...params, [key]: value });
-    console.log("[ImageParamsBar] Updating param:", key, "=", value);
-    console.log("[ImageParamsBar] New params:", newParams);
-    setParams(newParams);
-    onParamsChange?.(newParams);
+    setParams((prevParams) => (isSameParams(prevParams, newParams) ? prevParams : newParams));
+    if (!isSameParams(params, newParams)) {
+      onParamsChange?.(newParams);
+    }
   };
 
   // 内联模式：只返回参数按钮，嵌入工具栏