diff --git a/packages/services/conversation-service/src/infrastructure/agents/coordinator/coordinator-agent.service.ts b/packages/services/conversation-service/src/infrastructure/agents/coordinator/coordinator-agent.service.ts
index 73b0455..774f594 100644
--- a/packages/services/conversation-service/src/infrastructure/agents/coordinator/coordinator-agent.service.ts
+++ b/packages/services/conversation-service/src/infrastructure/agents/coordinator/coordinator-agent.service.ts
@@ -61,7 +61,7 @@ export interface FileAttachment {
 
 /** 兼容旧版 StreamChunk 格式 */
 export interface StreamChunk {
-  type: 'text' | 'tool_use' | 'tool_result' | 'end' | 'stage_change' | 'state_update' | 'error'
+  type: 'text' | 'tool_use' | 'tool_result' | 'end' | 'usage' | 'stage_change' | 'state_update' | 'error'
     | 'agent_start' | 'agent_progress' | 'agent_complete' | 'coordinator_thinking';
   content?: string;
   toolName?: string;
@@ -511,7 +511,7 @@ export class CoordinatorAgentService implements OnModuleInit {
 
       case 'usage':
         return {
-          type: 'end',
+          type: 'usage',
           inputTokens: event.usage.inputTokens,
           outputTokens: event.usage.outputTokens,
         };