diff --git a/app/components/chat/chat-message.tsx b/app/components/chat/chat-message.tsx
index 6426859..c08df7f 100644
--- a/app/components/chat/chat-message.tsx
+++ b/app/components/chat/chat-message.tsx
@@ -4,6 +4,8 @@ import type { ChatItem, Feedbacktype, ThoughtItem, VisionFile } from '../../type
 import { CHAT_CONFIG } from '../../config/chat';
 import Markdown from './markdown';
 import ThoughtProcess from './thought-process';
+import ThinkingBlock from './thinking-block';
+import { parseMessageContent } from '../../utils/message-parser';
 import { Dayjs } from 'dayjs';
 import '../../styles/components/chat-with-llm/chat-message.css';
 
@@ -85,12 +87,22 @@ export default function ChatMessage({
             );
         }
 
-        // 普通模式 - 恢复Markdown渲染
+        // 普通模式 - 解析内容，检查是否包含思考过程
+        const parsed = parseMessageContent(content);
+
         return (
             <div>
-                <div className={isResponding ? 'streaming-text' : ''}>
-                    <Markdown content={content} />
-                </div>
+                {/* 思考过程区域 */}
+                {parsed.hasThinking && (
+                    <ThinkingBlock content={parsed.thinking} defaultExpanded={false} />
+                )}
+
+                {/* 实际回复内容 */}
+                {parsed.response && (
+                    <div className={isResponding ? 'streaming-text' : ''}>
+                        <Markdown content={parsed.response} />
+                    </div>
+                )}
             </div>
         );
     };
diff --git a/app/components/chat/thinking-block.tsx b/app/components/chat/thinking-block.tsx
new file mode 100644
index 0000000..48e43fa
--- /dev/null
+++ b/app/components/chat/thinking-block.tsx
@@ -0,0 +1,63 @@
+import React, { useState } from 'react';
+import { DownOutlined, UpOutlined, BulbOutlined } from '@ant-design/icons';
+import '../../styles/components/chat-with-llm/thinking-block.css';
+
+interface ThinkingBlockProps {
+    /** 思考过程内容 */
+    content: string;
+    /** 是否默认展开 */
+    defaultExpanded?: boolean;
+}
+
+/**
+ * 思考过程展示组件
+ * 参考 GPT-5 和 Claude 网页版的思考过程UI设计
+ * 可折叠的思考过程区域，契合当前淡绿色配色方案
+ */
+export default function ThinkingBlock({ content, defaultExpanded = false }: ThinkingBlockProps) {
+    const [expanded, setExpanded] = useState(defaultExpanded);
+
+    if (!content) return null;
+
+    return (
+        <div className="thinking-block">
+            {/* 折叠/展开按钮 */}
+            <div
+                className="thinking-header"
+                onClick={() => setExpanded(!expanded)}
+                role="button"
+                tabIndex={0}
+                onKeyDown={(e) => {
+                    if (e.key === 'Enter' || e.key === ' ') {
+                        setExpanded(!expanded);
+                    }
+                }}
+            >
+                <div className="thinking-title">
+                    <BulbOutlined className="thinking-icon" />
+                    <span className="thinking-label">思考过程</span>
+                </div>
+                <div className="thinking-toggle">
+                    {expanded ? (
+                        <UpOutlined className="toggle-icon" />
+                    ) : (
+                        <DownOutlined className="toggle-icon" />
+                    )}
+                </div>
+            </div>
+
+            {/* 思考内容 */}
+            {expanded && (
+                <div className="thinking-content">
+                    <div className="thinking-text">
+                        {content.split('\n').map((line, index) => (
+                            <p key={index} className="thinking-paragraph">
+                                {line || '\u00A0'}
+                            </p>
+                        ))}
+                    </div>
+                </div>
+            )}
+        </div>
+    );
+}
diff --git a/app/styles/components/chat-with-llm/thinking-block.css b/app/styles/components/chat-with-llm/thinking-block.css
new file mode 100644
index 0000000..d54fc9e
--- /dev/null
+++ b/app/styles/components/chat-with-llm/thinking-block.css
@@ -0,0 +1,168 @@
+/* 思考过程区域 - 契合当前淡绿色配色方案 */
+.thinking-block {
+    margin-bottom: 12px;
+    border-radius: 12px;
+    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
+    border: 1px solid #a4e2ad;
+    overflow: hidden;
+    transition: all 0.3s ease;
+}
+
+.thinking-block:hover {
+    border-color: #8dd99a;
+    box-shadow: 0 2px 8px rgba(164, 226, 173, 0.2);
+}
+
+/* 思考过程头部 */
+.thinking-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 10px 14px;
+    cursor: pointer;
+    user-select: none;
+    background: rgba(164, 226, 173, 0.15);
+    transition: background 0.2s ease;
+}
+
+.thinking-header:hover {
+    background: rgba(164, 226, 173, 0.25);
+}
+
+.thinking-header:active {
+    background: rgba(164, 226, 173, 0.35);
+}
+
+.thinking-title {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    font-size: 14px;
+    font-weight: 500;
+    color: #2e7d32;
+}
+
+.thinking-icon {
+    font-size: 16px;
+    color: #66bb6a;
+}
+
+.thinking-label {
+    font-weight: 500;
+}
+
+.thinking-toggle {
+    display: flex;
+    align-items: center;
+}
+
+.toggle-icon {
+    font-size: 12px;
+    color: #66bb6a;
+    transition: transform 0.3s ease;
+}
+
+/* 思考内容区域 */
+.thinking-content {
+    padding: 12px 14px;
+    background: rgba(255, 255, 255, 0.5);
+    border-top: 1px solid rgba(164, 226, 173, 0.3);
+    animation: expandContent 0.3s ease-out;
+}
+
+@keyframes expandContent {
+    from {
+        opacity: 0;
+        max-height: 0;
+        padding-top: 0;
+        padding-bottom: 0;
+    }
+    to {
+        opacity: 1;
+        max-height: 1000px;
+        padding-top: 12px;
+        padding-bottom: 12px;
+    }
+}
+
+.thinking-text {
+    font-size: 13px;
+    line-height: 1.6;
+    color: #37474f;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+}
+
+.thinking-paragraph {
+    margin: 0 0 8px 0;
+    padding: 0;
+}
+
+.thinking-paragraph:last-child {
+    margin-bottom: 0;
+}
+
+/* 响应式设计 */
+@media (max-width: 768px) {
+    .thinking-block {
+        border-radius: 10px;
+        margin-bottom: 10px;
+    }
+
+    .thinking-header {
+        padding: 8px 12px;
+    }
+
+    .thinking-title {
+        font-size: 13px;
+    }
+
+    .thinking-icon {
+        font-size: 14px;
+    }
+
+    .thinking-content {
+        padding: 10px 12px;
+    }
+
+    .thinking-text {
+        font-size: 12px;
+        line-height: 1.5;
+    }
+}
+
+@media (max-width: 480px) {
+    .thinking-block {
+        border-radius: 8px;
+        margin-bottom: 8px;
+    }
+
+    .thinking-header {
+        padding: 6px 10px;
+    }
+
+    .thinking-title {
+        font-size: 12px;
+    }
+
+    .thinking-icon {
+        font-size: 13px;
+    }
+
+    .toggle-icon {
+        font-size: 11px;
+    }
+
+    .thinking-content {
+        padding: 8px 10px;
+    }
+
+    .thinking-text {
+        font-size: 11px;
+    }
+
+    .thinking-paragraph {
+        margin-bottom: 6px;
+    }
+}
diff --git a/app/utils/message-parser.ts b/app/utils/message-parser.ts
new file mode 100644
index 0000000..54aba58
--- /dev/null
+++ b/app/utils/message-parser.ts
@@ -0,0 +1,79 @@
+/**
+ * 消息解析工具
+ * 用于解析和处理AI消息中的特殊标签
+ */
+
+/**
+ * 解析后的消息内容
+ */
+export interface ParsedMessage {
+    /** 是否包含思考过程 */
+    hasThinking: boolean;
+    /** 思考过程内容 */
+    thinking: string;
+    /** 实际回复内容 */
+    response: string;
+}
+
+/**
+ * 解析消息内容，提取 <think> 标签中的思考过程
+ *
+ * @param content - 原始消息内容
+ * @returns 解析后的消息对象
+ *
+ * @example
+ * ```typescript
+ * const parsed = parseMessageContent(`
+ *   <think>这是思考过程</think>
+ *   这是实际回复
+ * `);
+ * // parsed.hasThinking === true
+ * // parsed.thinking === '这是思考过程'
+ * // parsed.response === '这是实际回复'
+ * ```
+ */
+export function parseMessageContent(content: string): ParsedMessage {
+    if (!content) {
+        return {
+            hasThinking: false,
+            thinking: '',
+            response: content || '',
+        };
+    }
+
+    // 匹配 <think> 标签（支持多行）
+    const thinkRegex = /<think>([\s\S]*?)<\/think>/i;
+    const match = content.match(thinkRegex);
+
+    if (!match) {
+        // 没有思考标签，直接返回原内容
+        return {
+            hasThinking: false,
+            thinking: '',
+            response: content,
+        };
+    }
+
+    // 提取思考内容
+    const thinking = match[1].trim();
+
+    // 移除 <think> 标签，获取实际回复
+    const response = content.replace(thinkRegex, '').trim();
+
+    return {
+        hasThinking: true,
+        thinking,
+        response,
+    };
+}
+
+/**
+ * 检查内容是否包含思考标签
+ *
+ * @param content - 要检查的内容
+ * @returns 是否包含思考标签
+ */
+export function hasThinkingTag(content: string): boolean {
+    if (!content) return false;
+    return /<think>/i.test(content);
+}