diff --git a/app/Services/DoctorAccountService.php b/app/Services/DoctorAccountService.php
index 7bcf49e..cb4221e 100644
--- a/app/Services/DoctorAccountService.php
+++ b/app/Services/DoctorAccountService.php
@@ -563,7 +563,9 @@ class DoctorAccountService extends BaseService
         }
 
         // 实际纳税金额
-        $income = $income * 0.8;
+        if ($income > 4000){
+            $income = $income * 0.8;
+        }
 
         if ($income <= 20000) {
             $tax_rate = 0.2; // 税率