diff --git a/app/Models/Transaction.php b/app/Models/Transaction.php
index 87b3a31..cbfcfa5 100644
--- a/app/Models/Transaction.php
+++ b/app/Models/Transaction.php
@@ -23,6 +23,10 @@ class Transaction extends Model
         'paid_at',
     ];
 
+    protected $casts = [
+        'balance' => 'decimal:2',
+    ];
+
     protected $fillable = [
         // 交易类型
         'type',
diff --git a/app/Models/User.php b/app/Models/User.php
index b7344d7..64cd3e6 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -113,7 +113,7 @@ class User extends Authenticatable
 
     protected $casts = [
         'email_verified_at' => 'datetime',
-        'balance' => 'float',
+        'balance' => 'decimal:2',
         'banned_at' => 'datetime',
     ];
 
@@ -125,9 +125,9 @@ protected static function boot()
 
             // balance 四舍五入
 
-            if ($model->isDirty('balance')) {
-                $model->balance = round($model->balance, 2, PHP_ROUND_HALF_DOWN);
-            }
+            // if ($model->isDirty('balance')) {
+            //     $model->balance = round($model->balance, 2, PHP_ROUND_HALF_DOWN);
+            // }
 
             if ($model->isDirty('banned_at')) {
                 if ($model->banned_at) {