diff --git a/src/views/agentCard.ts b/src/views/agentCard.ts
new file mode 100644
index 0000000..1515750
--- /dev/null
+++ b/src/views/agentCard.ts
@@ -0,0 +1,311 @@
+/**
+ * 智能体卡片组件
+ *
+ * 功能说明:
+ * - 显示子智能体的执行过程
+ * - 支持展开/收起步骤详情
+ * - 显示执行状态和统计信息
+ */
+
+import type {
+  AgentStartEvent,
+  AgentProgressEvent,
+  AgentCompleteEvent,
+  AgentErrorEvent
+} from '../types/api';
+
+/**
+ * 获取智能体卡片样式
+ */
+export function getAgentCardStyles(): string {
+  return `
+    .agent-card {
+      background: var(--vscode-editor-background);
+      border: 1px solid var(--vscode-input-border);
+      border-radius: 8px;
+      margin: 10px 0;
+      overflow: hidden;
+    }
+    .agent-card-header {
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+      padding: 10px 12px;
+      background: var(--vscode-sideBar-background);
+      cursor: pointer;
+      user-select: none;
+    }
+    .agent-card-header:hover {
+      background: var(--vscode-list-hoverBackground);
+    }
+    .agent-card-title {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+      font-weight: 500;
+    }
+    .agent-card-icon {
+      font-size: 16px;
+    }
+    .agent-card-status {
+      font-size: 12px;
+      padding: 2px 6px;
+      border-radius: 4px;
+    }
+    .agent-card-status.running {
+      background: var(--vscode-inputValidation-infoBackground);
+      color: var(--vscode-inputValidation-infoForeground);
+    }
+    .agent-card-status.completed {
+      background: var(--vscode-testing-iconPassed);
+      color: white;
+    }
+    .agent-card-status.error {
+      background: var(--vscode-testing-iconFailed);
+      color: white;
+    }
+    .agent-card-toggle {
+      font-size: 12px;
+      color: var(--vscode-descriptionForeground);
+    }
+    .agent-card-body {
+      padding: 12px;
+      border-top: 1px solid var(--vscode-input-border);
+    }
+    .agent-card-body.collapsed {
+      display: none;
+    }
+    .agent-card-instruction {
+      font-size: 13px;
+      color: var(--vscode-descriptionForeground);
+      margin-bottom: 10px;
+      padding-bottom: 10px;
+      border-bottom: 1px dashed var(--vscode-input-border);
+    }
+    .agent-steps {
+      font-size: 13px;
+    }
+    .agent-step {
+      display: flex;
+      align-items: flex-start;
+      gap: 8px;
+      padding: 6px 0;
+      border-left: 2px solid var(--vscode-input-border);
+      padding-left: 12px;
+      margin-left: 6px;
+    }
+    .agent-step:last-child {
+      border-left-color: transparent;
+    }
+    .agent-step-icon {
+      flex-shrink: 0;
+    }
+    .agent-step-content {
+      flex: 1;
+      min-width: 0;
+    }
+    .agent-step-name {
+      font-weight: 500;
+    }
+    .agent-step-result {
+      font-size: 12px;
+      color: var(--vscode-descriptionForeground);
+      margin-top: 2px;
+      white-space: nowrap;
+      overflow: hidden;
+      text-overflow: ellipsis;
+    }
+    .agent-card-summary {
+      font-size: 13px;
+      padding: 8px 12px;
+      background: var(--vscode-sideBar-background);
+      border-top: 1px solid var(--vscode-input-border);
+    }
+    .agent-card-error {
+      color: var(--vscode-errorForeground);
+      padding: 8px 12px;
+      background: var(--vscode-inputValidation-errorBackground);
+    }
+  `;
+}
+
+/**
+ * 渲染智能体卡片（启动状态）
+ */
+export function renderAgentCardStart(event: AgentStartEvent): string {
+  return `
+    <div class="agent-card" id="agent-${event.agentId}">
+      <div class="agent-card-header" onclick="toggleAgentCard('${event.agentId}')">
+        <div class="agent-card-title">
+          <span class="agent-card-icon">🤖</span>
+          <span>${event.agentName}</span>
+          <span class="agent-card-status running">执行中</span>
+        </div>
+        <span class="agent-card-toggle">▼</span>
+      </div>
+      <div class="agent-card-body" id="agent-body-${event.agentId}">
+        <div class="agent-card-instruction">指令：${escapeHtml(event.instruction)}</div>
+        <div class="agent-steps" id="agent-steps-${event.agentId}">
+          <!-- 步骤将动态添加 -->
+        </div>
+      </div>
+    </div>
+  `;
+}
+
+/**
+ * 渲染步骤项（进行中）
+ */
+export function renderAgentStepRunning(event: AgentProgressEvent): string {
+  const inputStr = event.toolInput ? JSON.stringify(event.toolInput) : '';
+  const shortInput = inputStr.length > 50 ? inputStr.substring(0, 50) + '...' : inputStr;
+
+  return `
+    <div class="agent-step" id="agent-step-${event.agentId}-${event.step}">
+      <span class="agent-step-icon">🔄</span>
+      <div class="agent-step-content">
+        <div class="agent-step-name">${event.toolName}</div>
+        <div class="agent-step-result">${escapeHtml(shortInput)}</div>
+      </div>
+    </div>
+  `;
+}
+
+/**
+ * 更新步骤项（完成）
+ */
+export function getStepCompleteUpdate(event: AgentProgressEvent): { icon: string; result: string } {
+  const result = event.toolResult || '';
+  const shortResult = result.length > 80 ? result.substring(0, 80) + '...' : result;
+  return {
+    icon: event.status === 'completed' ? '✅' : '❌',
+    result: shortResult
+  };
+}
+
+/**
+ * 获取智能体卡片脚本
+ */
+export function getAgentCardScript(): string {
+  return `
+    // 智能体状态存储
+    const agentStates = {};
+
+    // 切换智能体卡片展开/收起
+    function toggleAgentCard(agentId) {
+      const body = document.getElementById('agent-body-' + agentId);
+      const header = body?.previousElementSibling;
+      const toggle = header?.querySelector('.agent-card-toggle');
+
+      if (body && toggle) {
+        body.classList.toggle('collapsed');
+        toggle.textContent = body.classList.contains('collapsed') ? '▶' : '▼';
+      }
+    }
+
+    // 处理智能体启动事件
+    function handleAgentStart(event) {
+      agentStates[event.agentId] = {
+        status: 'running',
+        steps: []
+      };
+
+      // 在当前消息中添加智能体卡片
+      const currentMessage = document.querySelector('.bot-message:last-child .message-content');
+      if (currentMessage) {
+        currentMessage.insertAdjacentHTML('beforeend', renderAgentCardStart(event));
+      }
+    }
+
+    // 处理智能体进度事件
+    function handleAgentProgress(event) {
+      const stepsContainer = document.getElementById('agent-steps-' + event.agentId);
+      if (!stepsContainer) return;
+
+      if (event.status === 'running') {
+        // 添加新步骤
+        stepsContainer.insertAdjacentHTML('beforeend', renderAgentStepRunning(event));
+      } else if (event.status === 'completed') {
+        // 更新步骤状态
+        const stepEl = document.getElementById('agent-step-' + event.agentId + '-' + event.step);
+        if (stepEl) {
+          const iconEl = stepEl.querySelector('.agent-step-icon');
+          const resultEl = stepEl.querySelector('.agent-step-result');
+          if (iconEl) iconEl.textContent = '✅';
+          if (resultEl) {
+            const result = event.toolResult || '';
+            resultEl.textContent = result.length > 80 ? result.substring(0, 80) + '...' : result;
+          }
+        }
+      }
+    }
+
+    // 处理智能体完成事件
+    function handleAgentComplete(event) {
+      const card = document.getElementById('agent-' + event.agentId);
+      if (!card) return;
+
+      // 更新状态
+      const statusEl = card.querySelector('.agent-card-status');
+      if (statusEl) {
+        statusEl.className = 'agent-card-status completed';
+        statusEl.textContent = '完成';
+      }
+
+      // 添加摘要
+      const body = card.querySelector('.agent-card-body');
+      if (body) {
+        body.insertAdjacentHTML('beforeend',
+          '<div class="agent-card-summary">' + escapeHtml(event.summary) + '</div>'
+        );
+      }
+
+      // 自动收起
+      body?.classList.add('collapsed');
+      const toggle = card.querySelector('.agent-card-toggle');
+      if (toggle) toggle.textContent = '▶';
+    }
+
+    // 处理智能体错误事件
+    function handleAgentError(event) {
+      const card = document.getElementById('agent-' + event.agentId);
+      if (!card) return;
+
+      // 更新状态
+      const statusEl = card.querySelector('.agent-card-status');
+      if (statusEl) {
+        statusEl.className = 'agent-card-status error';
+        statusEl.textContent = '错误';
+      }
+
+      // 添加错误信息
+      const body = card.querySelector('.agent-card-body');
+      if (body) {
+        body.insertAdjacentHTML('beforeend',
+          '<div class="agent-card-error">错误：' + escapeHtml(event.error) + '</div>'
+        );
+      }
+    }
+
+    // HTML 转义
+    function escapeHtml(text) {
+      if (!text) return '';
+      const div = document.createElement('div');
+      div.textContent = text;
+      return div.innerHTML;
+    }
+  `;
+}
+
+/**
+ * HTML 转义（服务端使用）
+ */
+function escapeHtml(text: string): string {
+  if (!text) return '';
+  return text
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#039;');
+}
diff --git a/src/views/webviewContent.ts b/src/views/webviewContent.ts
index c3e321a..740d484 100644
--- a/src/views/webviewContent.ts
+++ b/src/views/webviewContent.ts
@@ -17,6 +17,10 @@ import {
   getMessageAreaStyles,
   getMessageAreaScript,
 } from "./messageArea";
+import {
+  getAgentCardStyles,
+  getAgentCardScript,
+} from "./agentCard";
 /**
  * 获取 WebView 面板的 HTML 内容
  */
@@ -65,6 +69,7 @@ export function getWebviewContent(iconUri?: string): string {
       padding: 0 20px 20px 20px;
     }
     ${getMessageAreaStyles()}
+    ${getAgentCardStyles()}
     ${getWaveformPreviewContent()}
     ${getConversationHistoryBarStyles()}
     ${getInputAreaStyles()}
@@ -531,6 +536,7 @@ export function getWebviewContent(iconUri?: string): string {
     });
 
     ${getMessageAreaScript()}
+    ${getAgentCardScript()}
     ${getWaveformPreviewScript()}
     ${getConversationHistoryBarScript()}
     ${getInputAreaScript()}