diff --git a/app/Services/WalletService.php b/app/Services/WalletService.php
index 7f8d45a8..b14a8ab5 100644
--- a/app/Services/WalletService.php
+++ b/app/Services/WalletService.php
@@ -24,24 +24,24 @@ class WalletService
 
         // 变更前余额
         $beforeBalance = $wallet->balance;
-        $_balance = abs($changeBalance);
+        $_changeBalance = abs($changeBalance);
 
         if ($changeBalance > 0) {
             // 收入
             $user->wallet()->update([
-                'balance' => DB::raw("balance + {$_balance}"),
-                'total_revenue' => DB::raw("total_revenue + {$_balance}"),
+                'balance' => DB::raw("balance + {$_changeBalance}"),
+                'total_revenue' => DB::raw("total_revenue + {$_changeBalance}"),
             ]);
         } else {
             // 支出
 
-            if ($wallet->balance < $_balance) {
-                throw new BizException('可提现金额不足');
+            if ($wallet->balance < $_changeBalance) {
+                throw new BizException('可提余额不足');
             }
 
             $user->wallet()->update([
-                'balance' => DB::raw("balance - {$_balance}"),
-                'total_expenses' => DB::raw("total_expenses + {$_balance}"),
+                'balance' => DB::raw("balance - {$_changeBalance}"),
+                'total_expenses' => DB::raw("total_expenses + {$_changeBalance}"),
             ]);
         }