diff --git a/app/controller/api/Auth.php b/app/controller/api/Auth.php
index d5cd50c0..bd0a4424 100644
--- a/app/controller/api/Auth.php
+++ b/app/controller/api/Auth.php
@@ -282,9 +282,7 @@ class Auth extends BaseController
         }
         $merchantTypeInfo = Db::name('merchant_type')->where('mer_type_id', $merchant['type_id'])->find();
         if ($merchantTypeInfo['first_margin'] > 0) {
-            if ($merchant['first_margin_status']) {
-                $merchant['margin'] = bcsub($merchant['margin'], $merchantTypeInfo['first_margin'], 2);
-            } else {
+            if (!$merchant['first_margin_status']) {
                 $merchant['margin'] = $merchantTypeInfo['first_margin'];
             }
         }
diff --git a/app/controller/api/store/merchant/Merchant.php b/app/controller/api/store/merchant/Merchant.php
index 4502a1d2..44af882f 100644
--- a/app/controller/api/store/merchant/Merchant.php
+++ b/app/controller/api/store/merchant/Merchant.php
@@ -272,7 +272,7 @@ class Merchant extends BaseController
         $merchantTypeInfo = Db::name('merchant_type')->where('mer_type_id', $merchantInfo['type_id'])->find();
         if ($merchantTypeInfo['first_margin'] > 0) {
             if ($merchantInfo['first_margin_status']) {
-                $merchantInfo['margin'] = bcsub($merchantInfo['margin'], $merchantTypeInfo['first_margin'], 2);
+                $merchantInfo['margin'] = $merchantInfo['margin'];
                 $merchantInfo['unpaid_margin'] = $merchantInfo['margin'];
             } else {
                 $merchantInfo['margin'] = $merchantTypeInfo['first_margin'];