diff --git a/backend/app/Http/Controllers/Api/ChildrenController.php b/backend/app/Http/Controllers/Api/ChildrenController.php
index 290df9ad..6680520e 100644
--- a/backend/app/Http/Controllers/Api/ChildrenController.php
+++ b/backend/app/Http/Controllers/Api/ChildrenController.php
@@ -271,7 +271,7 @@ class ChildrenController extends Controller {
     }
 
     public function detail (Request $r, $child_id) {
-        $child_select = ['email', 'tel', 'last_name', 'first_name', 'image', 'company'];
+        $child_select = ['email', 'tel', 'last_name', 'first_name', 'identity', 'image', 'company'];
         $father_relation_select = ['hire_at'];
 
         // 親詳細の取得に成功
@@ -350,6 +350,7 @@ class ChildrenController extends Controller {
             'tel' => 'required|numeric|digits_between:0,99999999999|starts_with:0',
             'last_name' => 'required|max:100',
             'first_name' => 'required|max:100',
+            'identity' => 'required|max:20|alpha_num',
             'company' => 'max:100',
         ]);
 
@@ -362,6 +363,7 @@ class ChildrenController extends Controller {
             'tel' => $r->tel,
             'last_name' => $r->last_name,
             'first_name' => $r->first_name,
+            'identity' => $r->identity,
             'company' => $r->company,
         ];