diff --git a/backend/app/Http/Controllers/Api/MeetingsController.php b/backend/app/Http/Controllers/Api/MeetingsController.php
index 73e018a3..db37c7da 100644
--- a/backend/app/Http/Controllers/Api/MeetingsController.php
+++ b/backend/app/Http/Controllers/Api/MeetingsController.php
@@ -18,6 +18,7 @@ use App\Models\Father;
 use App\Models\FatherRelation;
 
 use App\Mail\FathersApprovalMail;
+use App\Mail\MeetingEditNotification;
 
 class MeetingsController extends Controller {
     public function register (Request $r) {
@@ -800,12 +801,36 @@ class MeetingsController extends Controller {
             }
 
             // データベースに保存します。
-            Meeting::where('id', (int)$meeting_id)->update($update);
+            DB::beginTransaction();
+
+            $meeting = Meeting::find((int)$meeting_id);
+
+            $meeting->title = $update['title'];
+            $meeting->text = $update['text'];
+            if (isset($update['memo'])) $meeting->memo = $update['memo'];
+            if (isset($update['pdf'])) $meeting->pdf = $update['pdf'];
+
+            $meeting->save();
+
+            // 子供達を知らせます。
+            if (null !== ($fr = FatherRelation::where('father_id', (int)session()->get('fathers')['id'])->get())) {
+                foreach ($fr as $f) {
+                    if (null === ($child = Child::where('id', $f->child_id)->first())) {
+                        Log::critical('ミーティングの編集エラー：子供データが存在しません。親ID：'.session()->get('fathers')['id'].'、子ID：'.$f->child_id);
+                    }
+                    else {
+                        Mail::to($child->email)->send(new MeetingEditNotification(session()->get('fathers')['company'], (int)$meeting_id));
+                    }
+                }
+            }
+
+            DB::commit();
         } catch (\Throwable $e) {
             Log::critical($e->getMessage());
             if (isset($r->pdf) && !is_null($r->pdf)) {
                 Storage::disk('private')->delete($filename);
             }
+            DB::rollback();
             return ['status_code' => 400];
         }