diff --git a/app/Helpers/Numeric.php b/app/Helpers/Numeric.php
index d7a69146..359a017d 100644
--- a/app/Helpers/Numeric.php
+++ b/app/Helpers/Numeric.php
@@ -8,14 +8,14 @@ class Numeric
      * 去除数字字符串小数点后多余的 0
      *
      * @param mixed $value
-     * @return string
+     * @return mixed
      */
-    public static function trimZero($value)
+    public static function trimTrailingZero($value)
     {
         if (is_numeric($value) && strpos($value, '.') !== false) {
-            $value = rtrim(rtrim($value, '0'), '.');
+            $value = rtrim(rtrim($value, '0'), '.') ?: '0';
         }
 
-        return $value ?: '0';
+        return $value;
     }
 }
diff --git a/app/Models/Order.php b/app/Models/Order.php
index 0190504b..e1be9247 100644
--- a/app/Models/Order.php
+++ b/app/Models/Order.php
@@ -62,6 +62,6 @@ class Order extends Model
      */
     public function getTotalAmountFormatAttribute()
     {
-        return Numeric::trimZero(bcdiv($this->attributes['total_amount'], 100, 2));
+        return Numeric::trimTrailingZero(bcdiv($this->attributes['total_amount'], 100, 2));
     }
 }
diff --git a/app/Models/UserCoupon.php b/app/Models/UserCoupon.php
index 1e948a2a..1992a834 100644
--- a/app/Models/UserCoupon.php
+++ b/app/Models/UserCoupon.php
@@ -71,8 +71,6 @@ class UserCoupon extends Model
 
     /**
      * 优惠券可用范围规则
-     *
-     * @return void
      */
     public function ranges()
     {
@@ -100,10 +98,10 @@ class UserCoupon extends Model
 
         // 如果是折扣券
         if ($this->isDiscountCoupon()) {
-            return NumericHelper::trimZero(bcdiv($value, 10, 1));
+            return NumericHelper::trimTrailingZero(bcdiv($value, 10, 1));
         }
 
-        return NumericHelper::trimZero(bcdiv($value, 100, 2));
+        return NumericHelper::trimTrailingZero(bcdiv($value, 100, 2));
     }
 
     /**
@@ -113,7 +111,7 @@ class UserCoupon extends Model
      */
     public function getCouponThresholdFormatAttribute(): string
     {
-        return NumericHelper::trimZero(
+        return NumericHelper::trimTrailingZero(
             bcdiv($this->attributes['coupon_threshold'], 100, 2)
         );
     }