diff --git a/shared/db/PvpDefense.ts b/shared/db/PvpDefense.ts
index 969f6f58d..3fd59a986 100644
--- a/shared/db/PvpDefense.ts
+++ b/shared/db/PvpDefense.ts
@@ -6,6 +6,7 @@ import { PVP } from '../pubUtils/dicParam';
 
 @index({ roleId: 1 })
 @index({ serverId: 1, score: 1 })
+@index({ serverId: 1, seasonNum: 1 })
 export default class PvpDefense extends BaseModel {
     @prop({ required: true })
     serverId: number;					// 区 id