diff --git a/backend/services/mining-service/src/application/services/batch-mining.service.ts b/backend/services/mining-service/src/application/services/batch-mining.service.ts
index 483301c0..8cfcd61e 100644
--- a/backend/services/mining-service/src/application/services/batch-mining.service.ts
+++ b/backend/services/mining-service/src/application/services/batch-mining.service.ts
@@ -90,6 +90,8 @@ export interface BatchMiningPreviewResult {
 const BASE_CONTRIBUTION_PER_TREE = new Decimal('22617');  // 每棵树的基础算力
 const PERSONAL_RATE = new Decimal('0.70');               // 个人算力占比 70%
 const SECONDS_PER_DAY = 86400;
+// 批量补发用户占全网算力的比例（这些用户只占全网的70%，还有30%是其他用户）
+const BATCH_USERS_NETWORK_RATIO = new Decimal('0.70');
 
 /**
  * 挖矿阶段信息
@@ -235,10 +237,13 @@ export class BatchMiningService {
     const batchResults: BatchMiningPreviewResult['batches'] = [];
 
     // 计算累计全网算力（最终状态）
-    let finalNetworkContribution = new Decimal(0);
+    // 这些用户只占全网的70%，所以全网算力 = 用户算力 / 0.7
+    let totalUserContribution = new Decimal(0);
     for (const contribution of batchContributions.values()) {
-      finalNetworkContribution = finalNetworkContribution.plus(contribution);
+      totalUserContribution = totalUserContribution.plus(contribution);
     }
+    const finalNetworkContribution = totalUserContribution.dividedBy(BATCH_USERS_NETWORK_RATIO);
+    this.logger.log(`[preview] 用户总算力: ${totalUserContribution.toFixed(2)}, 全网算力(70%): ${finalNetworkContribution.toFixed(2)}`);
 
     for (const batchNum of sortedBatches) {
       const batchItems = batchGroups.get(batchNum)!;
@@ -364,11 +369,14 @@ export class BatchMiningService {
       const phaseDays = currentPreMineDays - nextPreMineDays;
 
       if (phaseDays > 0) {
-        // 计算该阶段的全网算力
-        let networkContribution = new Decimal(0);
+        // 计算该阶段参与用户的算力
+        let participatingContribution = new Decimal(0);
         for (const batch of participatingBatches) {
-          networkContribution = networkContribution.plus(batchContributions.get(batch) || 0);
+          participatingContribution = participatingContribution.plus(batchContributions.get(batch) || 0);
         }
+        // 实际全网算力 = 参与用户算力 / 用户占比
+        // 因为这些用户只占全网的70%，所以全网算力 = 用户算力 / 0.7
+        const networkContribution = participatingContribution.dividedBy(BATCH_USERS_NETWORK_RATIO);
 
         phases.push({
           phaseNumber: currentPhase,
@@ -379,7 +387,7 @@ export class BatchMiningService {
           participatingBatches: [...participatingBatches],
         });
 
-        this.logger.log(`[buildMiningPhases] 阶段${currentPhase}: ${phaseDays}天, 批次[${participatingBatches.join(',')}], 算力=${networkContribution.toFixed(2)}`);
+        this.logger.log(`[buildMiningPhases] 阶段${currentPhase}: ${phaseDays}天, 批次[${participatingBatches.join(',')}], 参与算力=${participatingContribution.toFixed(2)}, 全网算力=${networkContribution.toFixed(2)}`);
         currentPhase++;
         usedDays += phaseDays;
       }
@@ -389,10 +397,12 @@ export class BatchMiningService {
     const remainingDays = maxTotalMiningDays - usedDays;
     if (remainingDays > 0) {
       // 所有批次都参与
-      let networkContribution = new Decimal(0);
+      let participatingContribution = new Decimal(0);
       for (const batch of sortedBatches) {
-        networkContribution = networkContribution.plus(batchContributions.get(batch) || 0);
+        participatingContribution = participatingContribution.plus(batchContributions.get(batch) || 0);
       }
+      // 实际全网算力 = 参与用户算力 / 用户占比
+      const networkContribution = participatingContribution.dividedBy(BATCH_USERS_NETWORK_RATIO);
 
       phases.push({
         phaseNumber: currentPhase,
@@ -403,7 +413,7 @@ export class BatchMiningService {
         participatingBatches: [...sortedBatches],
       });
 
-      this.logger.log(`[buildMiningPhases] 阶段${currentPhase}(最终): ${remainingDays}天, 所有批次[${sortedBatches.join(',')}], 算力=${networkContribution.toFixed(2)}`);
+      this.logger.log(`[buildMiningPhases] 阶段${currentPhase}(最终): ${remainingDays}天, 所有批次[${sortedBatches.join(',')}], 参与算力=${participatingContribution.toFixed(2)}, 全网算力=${networkContribution.toFixed(2)}`);
     }
 
     return phases;