diff --git a/internal/application/statistics/statistics_application_service_impl.go b/internal/application/statistics/statistics_application_service_impl.go
index ad5dd72..6137e58 100644
--- a/internal/application/statistics/statistics_application_service_impl.go
+++ b/internal/application/statistics/statistics_application_service_impl.go
@@ -2356,15 +2356,26 @@ func (s *StatisticsApplicationServiceImpl) AdminGetConsumptionDomainStatistics(c
 	}
 
 	var consumptionTrend []map[string]interface{}
-	if period == "day" {
-		consumptionTrend, err = s.walletTransactionRepo.GetSystemDailyStats(ctx, startTime, endTime)
-	} else if period == "month" {
-		consumptionTrend, err = s.walletTransactionRepo.GetSystemMonthlyStats(ctx, startTime, endTime)
-	}
+	if !startTime.IsZero() && !endTime.IsZero() {
+		if period == "day" {
+			consumptionTrend, err = s.walletTransactionRepo.GetSystemDailyStats(ctx, startTime, endTime)
+		} else if period == "month" {
+			consumptionTrend, err = s.walletTransactionRepo.GetSystemMonthlyStats(ctx, startTime, endTime)
+		}
 
-	if err != nil {
-		s.logger.Error("获取消费趋势数据失败", zap.Error(err))
-		return nil, err
+		if err != nil {
+			s.logger.Error("获取消费趋势数据失败", zap.Error(err))
+			return nil, err
+		}
+	} else {
+		// 如果没有指定时间范围，获取最近7天的数据
+		defaultEndDate := time.Now()
+		defaultStartDate := defaultEndDate.AddDate(0, 0, -7)
+		consumptionTrend, err = s.walletTransactionRepo.GetSystemDailyStats(ctx, defaultStartDate, defaultEndDate)
+		if err != nil {
+			s.logger.Error("获取消费每日趋势失败", zap.Error(err))
+			return nil, err
+		}
 	}
 
 	result := map[string]interface{}{
@@ -2433,15 +2444,26 @@ func (s *StatisticsApplicationServiceImpl) AdminGetRechargeDomainStatistics(ctx
 	}
 
 	var rechargeTrend []map[string]interface{}
-	if period == "day" {
-		rechargeTrend, err = s.rechargeRecordRepo.GetSystemDailyStats(ctx, startTime, endTime)
-	} else if period == "month" {
-		rechargeTrend, err = s.rechargeRecordRepo.GetSystemMonthlyStats(ctx, startTime, endTime)
-	}
+	if !startTime.IsZero() && !endTime.IsZero() {
+		if period == "day" {
+			rechargeTrend, err = s.rechargeRecordRepo.GetSystemDailyStats(ctx, startTime, endTime)
+		} else if period == "month" {
+			rechargeTrend, err = s.rechargeRecordRepo.GetSystemMonthlyStats(ctx, startTime, endTime)
+		}
 
-	if err != nil {
-		s.logger.Error("获取充值趋势数据失败", zap.Error(err))
-		return nil, err
+		if err != nil {
+			s.logger.Error("获取充值趋势数据失败", zap.Error(err))
+			return nil, err
+		}
+	} else {
+		// 如果没有指定时间范围，获取最近7天的数据
+		defaultEndDate := time.Now()
+		defaultStartDate := defaultEndDate.AddDate(0, 0, -7)
+		rechargeTrend, err = s.rechargeRecordRepo.GetSystemDailyStats(ctx, defaultStartDate, defaultEndDate)
+		if err != nil {
+			s.logger.Error("获取充值每日趋势失败", zap.Error(err))
+			return nil, err
+		}
 	}
 
 	result := map[string]interface{}{
diff --git a/internal/infrastructure/database/repositories/finance/gorm_recharge_record_repository.go b/internal/infrastructure/database/repositories/finance/gorm_recharge_record_repository.go
index 2866953..cdd2b22 100644
--- a/internal/infrastructure/database/repositories/finance/gorm_recharge_record_repository.go
+++ b/internal/infrastructure/database/repositories/finance/gorm_recharge_record_repository.go
@@ -287,9 +287,9 @@ func (r *GormRechargeRecordRepository) GetSystemDailyStats(ctx context.Context,
 			DATE(created_at) as date,
 			COALESCE(SUM(amount), 0) as amount
 		FROM recharge_records 
-		WHERE status = $1
-			AND DATE(created_at) >= $2
-			AND DATE(created_at) <= $3
+		WHERE status = ?
+			AND DATE(created_at) >= ?
+			AND DATE(created_at) <= ?
 		GROUP BY DATE(created_at)
 		ORDER BY date ASC
 	`
@@ -311,9 +311,9 @@ func (r *GormRechargeRecordRepository) GetSystemMonthlyStats(ctx context.Context
 			TO_CHAR(created_at, 'YYYY-MM') as month,
 			COALESCE(SUM(amount), 0) as amount
 		FROM recharge_records 
-		WHERE status = $1
-			AND created_at >= $2
-			AND created_at <= $3
+		WHERE status = ?
+			AND created_at >= ?
+			AND created_at <= ?
 		GROUP BY TO_CHAR(created_at, 'YYYY-MM')
 		ORDER BY month ASC
 	`
diff --git a/internal/infrastructure/database/repositories/finance/gorm_wallet_transaction_repository.go b/internal/infrastructure/database/repositories/finance/gorm_wallet_transaction_repository.go
index 24ab184..b67084a 100644
--- a/internal/infrastructure/database/repositories/finance/gorm_wallet_transaction_repository.go
+++ b/internal/infrastructure/database/repositories/finance/gorm_wallet_transaction_repository.go
@@ -581,8 +581,8 @@ func (r *GormWalletTransactionRepository) GetSystemDailyStats(ctx context.Contex
 			DATE(created_at) as date,
 			COALESCE(SUM(amount), 0) as amount
 		FROM wallet_transactions 
-		WHERE DATE(created_at) >= $1
-			AND DATE(created_at) <= $2
+		WHERE DATE(created_at) >= ?
+			AND DATE(created_at) <= ?
 		GROUP BY DATE(created_at)
 		ORDER BY date ASC
 	`
@@ -604,8 +604,8 @@ func (r *GormWalletTransactionRepository) GetSystemMonthlyStats(ctx context.Cont
 			TO_CHAR(created_at, 'YYYY-MM') as month,
 			COALESCE(SUM(amount), 0) as amount
 		FROM wallet_transactions 
-		WHERE created_at >= $1
-			AND created_at <= $2
+		WHERE created_at >= ?
+			AND created_at <= ?
 		GROUP BY TO_CHAR(created_at, 'YYYY-MM')
 		ORDER BY month ASC
 	`