diff --git a/src/services/sseHandler.ts b/src/services/sseHandler.ts
index 7bae62a..b6aba4b 100644
--- a/src/services/sseHandler.ts
+++ b/src/services/sseHandler.ts
@@ -21,7 +21,11 @@ import type {
   ToolErrorEvent,
   WarningEvent,
   NotificationEvent,
-  DepthUpdateEvent
+  DepthUpdateEvent,
+  AgentStartEvent,
+  AgentProgressEvent,
+  AgentCompleteEvent,
+  AgentErrorEvent
 } from '../types/api';
 
 /**
@@ -50,6 +54,14 @@ export interface SSECallbacks {
   onNotification?: (data: NotificationEvent) => void;
   /** 深度更新 */
   onDepthUpdate?: (data: DepthUpdateEvent) => void;
+  /** 子智能体启动 */
+  onAgentStart?: (data: AgentStartEvent) => void;
+  /** 子智能体进度 */
+  onAgentProgress?: (data: AgentProgressEvent) => void;
+  /** 子智能体完成 */
+  onAgentComplete?: (data: AgentCompleteEvent) => void;
+  /** 子智能体错误 */
+  onAgentError?: (data: AgentErrorEvent) => void;
   /** 连接打开 */
   onOpen?: () => void;
   /** 连接关闭 */
@@ -283,6 +295,18 @@ function dispatchEvent(
     case 'depth_update':
       callbacks.onDepthUpdate?.(data as DepthUpdateEvent);
       break;
+    case 'agent_start':
+      callbacks.onAgentStart?.(data as AgentStartEvent);
+      break;
+    case 'agent_progress':
+      callbacks.onAgentProgress?.(data as AgentProgressEvent);
+      break;
+    case 'agent_complete':
+      callbacks.onAgentComplete?.(data as AgentCompleteEvent);
+      break;
+    case 'agent_error':
+      callbacks.onAgentError?.(data as AgentErrorEvent);
+      break;
     default:
       console.log(`[SSE] 未知事件类型: ${eventType}`, data);
   }
diff --git a/src/types/api.ts b/src/types/api.ts
index 7927f4f..5b8c514 100644
--- a/src/types/api.ts
+++ b/src/types/api.ts
@@ -30,6 +30,10 @@ export type SSEEventType =
   | 'tool_complete'   // 工具执行完成
   | 'tool_error'      // 工具执行错误
   | 'ask_user'        // 向用户提问
+  | 'agent_start'     // 子智能体启动
+  | 'agent_progress'  // 子智能体进度
+  | 'agent_complete'  // 子智能体完成
+  | 'agent_error'     // 子智能体错误
   | 'complete'        // 对话完成
   | 'error'           // 错误
   | 'warning'         // 警告
@@ -92,6 +96,45 @@ export interface DepthUpdateEvent {
   depth: number;
 }
 
+// ============== 智能体事件类型 ==============
+
+/** agent_start 事件数据 */
+export interface AgentStartEvent {
+  agentId: string;
+  agentType: string;
+  agentName: string;
+  instruction: string;
+  timestamp: number;
+}
+
+/** agent_progress 事件数据 */
+export interface AgentProgressEvent {
+  agentId: string;
+  step: number;
+  toolName: string;
+  toolInput?: unknown;
+  toolResult?: string;
+  status: 'running' | 'completed' | 'error';
+  timestamp: number;
+}
+
+/** agent_complete 事件数据 */
+export interface AgentCompleteEvent {
+  agentId: string;
+  agentType: string;
+  summary: string;
+  stats: Record<string, unknown>;
+  timestamp: number;
+}
+
+/** agent_error 事件数据 */
+export interface AgentErrorEvent {
+  agentId: string;
+  agentType: string;
+  error: string;
+  timestamp: number;
+}
+
 // ============== 工具调用协议 (MCP 格式) ==============
 
 /**