diff --git a/app/Services/ParkingLicensePlateService.php b/app/Services/ParkingLicensePlateService.php
index af9ab72..37fddbf 100644
--- a/app/Services/ParkingLicensePlateService.php
+++ b/app/Services/ParkingLicensePlateService.php
@@ -49,7 +49,10 @@ class ParkingLicensePlateService
      */
     public function createData($data)
     {
-        if (ParkingLicensePlate::query()->where('number', $data['number'])
+        if (ParkingLicensePlate::query()->whereRaw(
+            'BINARY `number` = ?',
+            [$data['number']]
+        )
             ->exists()
         ) {
             throw new Exception(__('service.license_plate.number_exists'));
@@ -90,10 +93,12 @@ class ParkingLicensePlateService
 
             // 验证
             $existsWhere = [
-                ['number', '=', $data['number']],
                 ['id', '<>', $id]
             ];
-            if (ParkingLicensePlate::query()->where($existsWhere)->exists()) {
+            if (ParkingLicensePlate::query()->where($existsWhere)->whereRaw(
+                'BINARY `number` = ?',
+                [$data['number']]
+            )->exists()) {
                 throw new Exception(__('service.license_plate.number_exists'));
             }