diff --git a/app/Http/Controllers/Mobile/OtherController.php b/app/Http/Controllers/Mobile/OtherController.php
index 8588c41..3643d45 100755
--- a/app/Http/Controllers/Mobile/OtherController.php
+++ b/app/Http/Controllers/Mobile/OtherController.php
@@ -140,19 +140,19 @@ class OtherController extends CommonController
         $sortName = $all['sort_name'] ?? 'distance';
         $sortType = $all['sort_type'] ?? 'asc';
 
-        // 使用更稳定的距离计算公式，避免 acos 的精度问题
+        // 使用标准的 Haversine 公式计算距离
         $distanceFormula = "
-            (6371 * 2 * asin(
-                sqrt(
-                    pow(sin(radians((CAST(company_latitude AS DECIMAL(10,8)) - ?) / 2)), 2) +
-                    cos(radians(?)) * cos(radians(CAST(company_latitude AS DECIMAL(10,8)))) *
-                    pow(sin(radians((CAST(company_longitude AS DECIMAL(10,8)) - ?) / 2)), 2)
-                )
+            (6371 * acos(
+                cos(radians(?)) * 
+                cos(radians(CAST(company_latitude AS DECIMAL(10,8)))) * 
+                cos(radians(CAST(company_longitude AS DECIMAL(10,8))) - radians(?)) + 
+                sin(radians(?)) * 
+                sin(radians(CAST(company_latitude AS DECIMAL(10,8))))
             )) AS distance
         ";
 
         $query = Company::with('users')->select('*')
-            ->selectRaw($distanceFormula, [$latitude, $latitude, $longitude])
+            ->selectRaw($distanceFormula, [$latitude, $longitude, $latitude])
             ->where(function ($query) use ($all) {
                 if (isset($all['company_name'])) {
                     $query->where('company_name', 'like', '%' . $all['company_name'] . '%');