diff --git a/backend/services/mining-admin-service/src/api/controllers/config.controller.ts b/backend/services/mining-admin-service/src/api/controllers/config.controller.ts
index bed25de2..9a81f28d 100644
--- a/backend/services/mining-admin-service/src/api/controllers/config.controller.ts
+++ b/backend/services/mining-admin-service/src/api/controllers/config.controller.ts
@@ -86,14 +86,14 @@ export class ConfigController {
       const miningUserTotal = miningData.totalContribution || '0';
 
       // 判断算力是否同步完成
-      // 条件1：全网理论算力已同步（mining-service 中的 networkTotalContribution > 0）
-      // 条件2：用户有效算力已同步（mining-service 中的 totalContribution 与 contribution-service 相近）
-      const hasNetworkContribution = parseFloat(miningNetworkTotal) > 0;
-      const userSynced = userEffectiveContribution !== null &&
-        parseFloat(userEffectiveContribution) > 0 &&
-        Math.abs(parseFloat(miningUserTotal) - parseFloat(userEffectiveContribution)) < 0.01;
+      // 核心条件：全网理论算力已同步（mining-service 的 networkTotalContribution 与 contribution-service 相近）
+      // 全网理论算力是挖矿分母，必须同步后才能正确计算挖矿比例
+      const networkSynced = networkTotalContribution !== null &&
+        parseFloat(networkTotalContribution) > 0 &&
+        parseFloat(miningNetworkTotal) > 0 &&
+        Math.abs(parseFloat(miningNetworkTotal) - parseFloat(networkTotalContribution)) / parseFloat(networkTotalContribution) < 0.001;
 
-      const isSynced = hasNetworkContribution && userSynced;
+      const isSynced = networkSynced;
 
       return {
         ...miningData,