diff --git a/app/Model/UserDoctor.php b/app/Model/UserDoctor.php
index 4f2ec2a..78ff19a 100644
--- a/app/Model/UserDoctor.php
+++ b/app/Model/UserDoctor.php
@@ -296,23 +296,23 @@ class UserDoctor extends Model
                 // 响应时间快
                 $query->orderByRaw('avg_response_time = 0 ASC');
                 $query->orderBy('avg_response_time');
-                $query->orderBy(Db::raw("convert(substr(user_name,1,1) using `GBK`)"), 'asc');// 名称排名
+                $query->orderBy(Db::raw("convert(substr(gdxz_user_doctor.user_name,1,1) using `GBK`)"), 'asc');// 名称排名
             }  elseif ($sort_order == 3) {
                 // 价格从低到高
                 $query->orderBy('doctor_inquiry_config.inquiry_price', 'asc');
                 $query->orderByRaw('avg_response_time = 0 ASC');
                 $query->orderBy('avg_response_time');
-                $query->orderBy(Db::raw("convert(substr(user_name,1,1) using `GBK`)"), 'asc');// 名称排名
+                $query->orderBy(Db::raw("convert(substr(gdxz_user_doctor.user_name,1,1) using `GBK`)"), 'asc');// 名称排名
             } elseif ($sort_order == 4) {
                 // 价格从高到低
                 $query->orderBy('doctor_inquiry_config.inquiry_price', 'desc');
                 $query->orderByRaw('avg_response_time = 0 ASC');
                 $query->orderBy('avg_response_time');
-                $query->orderBy(Db::raw("convert(substr(user_name,1,1) using `GBK`)"), 'asc');// 名称排名
+                $query->orderBy(Db::raw("convert(substr(gdxz_user_doctor.user_name,1,1) using `GBK`)"), 'asc');// 名称排名
             } elseif ($sort_order == 5) {
                 // 服务数从多到少
                 $query->orderBy('served_patients_num', 'desc');
-                $query->orderBy(Db::raw("convert(substr(user_name,1,1) using `GBK`)"), 'asc');// 名称排名
+                $query->orderBy(Db::raw("convert(substr(gdxz_user_doctor.user_name,1,1) using `GBK`)"), 'asc');// 名称排名
             }
         }