diff --git a/app/controller/Wechat.php b/app/controller/Wechat.php
index 4d38887..a25e789 100644
--- a/app/controller/Wechat.php
+++ b/app/controller/Wechat.php
@@ -100,6 +100,7 @@ class Wechat
             ->build();
 
         dump(Payment::create([
+            'trade_no' => time().rand(100000, 999999),
             'order_id' => $order->id,
         ]));
 
diff --git a/app/model/Payment.php b/app/model/Payment.php
index 0f0163f..993ebc1 100644
--- a/app/model/Payment.php
+++ b/app/model/Payment.php
@@ -9,11 +9,6 @@ class Payment extends Model
 {
     protected $autoWriteTimestamp = true;
 
-    public function onBeforeInsert()
-    {
-        $this->trade_no = time();
-    }
-
     public function orders(): BelongsTo
     {
         return $this->belongsTo(Order::class);