diff --git a/app/Http/Controllers/RepliesController.php b/app/Http/Controllers/RepliesController.php
new file mode 100644
index 000000000..b3164b504
--- /dev/null
+++ b/app/Http/Controllers/RepliesController.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Reply;
+use Illuminate\Http\Request;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\ReplyRequest;
+
+class RepliesController extends Controller
+{
+    public function __construct()
+    {
+        $this->middleware('auth', ['except' => ['index', 'show']]);
+    }
+
+	public function index()
+	{
+		$replies = Reply::paginate();
+		return view('replies.index', compact('replies'));
+	}
+
+    public function show(Reply $reply)
+    {
+        return view('replies.show', compact('reply'));
+    }
+
+	public function create(Reply $reply)
+	{
+		return view('replies.create_and_edit', compact('reply'));
+	}
+
+	public function store(ReplyRequest $request)
+	{
+		$reply = Reply::create($request->all());
+		return redirect()->route('replies.show', $reply->id)->with('message', 'Created successfully.');
+	}
+
+	public function edit(Reply $reply)
+	{
+        $this->authorize('update', $reply);
+		return view('replies.create_and_edit', compact('reply'));
+	}
+
+	public function update(ReplyRequest $request, Reply $reply)
+	{
+		$this->authorize('update', $reply);
+		$reply->update($request->all());
+
+		return redirect()->route('replies.show', $reply->id)->with('message', 'Updated successfully.');
+	}
+
+	public function destroy(Reply $reply)
+	{
+		$this->authorize('destroy', $reply);
+		$reply->delete();
+
+		return redirect()->route('replies.index')->with('message', 'Deleted successfully.');
+	}
+}
\ No newline at end of file
diff --git a/app/Http/Requests/ReplyRequest.php b/app/Http/Requests/ReplyRequest.php
new file mode 100644
index 000000000..b592c3e21
--- /dev/null
+++ b/app/Http/Requests/ReplyRequest.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Http\Requests;
+
+class ReplyRequest extends Request
+{
+    public function rules()
+    {
+        switch($this->method())
+        {
+            // CREATE
+            case 'POST':
+            {
+                return [
+                    // CREATE ROLES
+                ];
+            }
+            // UPDATE
+            case 'PUT':
+            case 'PATCH':
+            {
+                return [
+                    // UPDATE ROLES
+                ];
+            }
+            case 'GET':
+            case 'DELETE':
+            default:
+            {
+                return [];
+            }
+        }
+    }
+
+    public function messages()
+    {
+        return [
+            // Validation messages
+        ];
+    }
+}
diff --git a/app/Models/Reply.php b/app/Models/Reply.php
new file mode 100644
index 000000000..107f7a6cb
--- /dev/null
+++ b/app/Models/Reply.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+class Reply extends Model
+{
+    protected $fillable = ['content'];
+
+    public function topic()
+    {
+        return $this->belongsTo(Topic::class);
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+}
diff --git a/app/Models/Topic.php b/app/Models/Topic.php
index d1e291974..6fc9a7f29 100644
--- a/app/Models/Topic.php
+++ b/app/Models/Topic.php
@@ -8,6 +8,11 @@ class Topic extends Model
         'title', 'body', 'category_id', 'excerpt', 'slug'
     ];
 
+    public function replies()
+    {
+        return $this->hasMany(Reply::class);
+    }
+
     public function category()
     {
         return $this->belongsTo(Category::class);
diff --git a/app/Models/User.php b/app/Models/User.php
index bb0fbfb3e..fda6cecde 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -32,4 +32,9 @@ public function isAuthorOf($model)
     {
         return $this->id == $model->user_id;
     }
+
+    public function replies()
+    {
+        return $this->hasMany(Reply::class);
+    }
 }
diff --git a/app/Observers/ReplyObserver.php b/app/Observers/ReplyObserver.php
new file mode 100644
index 000000000..c646a8e63
--- /dev/null
+++ b/app/Observers/ReplyObserver.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Observers;
+
+use App\Models\Reply;
+
+// creating, created, updating, updated, saving,
+// saved,  deleting, deleted, restoring, restored
+
+class ReplyObserver
+{
+    public function creating(Reply $reply)
+    {
+        //
+    }
+
+    public function updating(Reply $reply)
+    {
+        //
+    }
+}
\ No newline at end of file
diff --git a/app/Policies/ReplyPolicy.php b/app/Policies/ReplyPolicy.php
new file mode 100644
index 000000000..a5b6096b0
--- /dev/null
+++ b/app/Policies/ReplyPolicy.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\User;
+use App\Models\Reply;
+
+class ReplyPolicy extends Policy
+{
+    public function update(User $user, Reply $reply)
+    {
+        // return $reply->user_id == $user->id;
+        return true;
+    }
+
+    public function destroy(User $user, Reply $reply)
+    {
+        return true;
+    }
+}
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 330b6b265..a7e2da1c1 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -24,6 +24,7 @@ public function register()
     public function boot()
 	{
 		\App\Models\User::observe(\App\Observers\UserObserver::class);
+		\App\Models\Reply::observe(\App\Observers\ReplyObserver::class);
 		\App\Models\Topic::observe(\App\Observers\TopicObserver::class);
 
         //
diff --git a/app/Providers/AuthServiceProvider.php b/app/Providers/AuthServiceProvider.php
index 5a84ff44f..eed597b76 100644
--- a/app/Providers/AuthServiceProvider.php
+++ b/app/Providers/AuthServiceProvider.php
@@ -13,6 +13,7 @@ class AuthServiceProvider extends ServiceProvider
      * @var array
      */
     protected $policies = [
+		 \App\Models\Reply::class => \App\Policies\ReplyPolicy::class,
 		 \App\Models\Topic::class => \App\Policies\TopicPolicy::class,
         // 'App\Model' => 'App\Policies\ModelPolicy',
     ];
diff --git a/database/factories/ReplyFactory.php b/database/factories/ReplyFactory.php
new file mode 100644
index 000000000..7e3bf1386
--- /dev/null
+++ b/database/factories/ReplyFactory.php
@@ -0,0 +1,15 @@
+<?php
+
+use Faker\Generator as Faker;
+
+$factory->define(App\Models\Reply::class, function (Faker $faker) {
+
+    // 随机取一个月以内的时间
+    $time = $faker->dateTimeThisMonth();
+
+    return [
+        'content' => $faker->sentence(),
+        'created_at' => $time,
+        'updated_at' => $time,
+    ];
+});
diff --git a/database/migrations/2019_09_20_093630_create_replies_table.php b/database/migrations/2019_09_20_093630_create_replies_table.php
new file mode 100644
index 000000000..f725581e8
--- /dev/null
+++ b/database/migrations/2019_09_20_093630_create_replies_table.php
@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateRepliesTable extends Migration 
+{
+	public function up()
+	{
+		Schema::create('replies', function(Blueprint $table) {
+            $table->increments('id');
+            $table->integer('topic_id')->unsigned()->default(0)->index();
+            $table->bigInteger('user_id')->unsigned()->default(0)->index();
+            $table->text('content');
+            $table->timestamps();
+        });
+	}
+
+	public function down()
+	{
+		Schema::drop('replies');
+	}
+}
diff --git a/database/seeds/DatabaseSeeder.php b/database/seeds/DatabaseSeeder.php
index 8224864e0..285d2de68 100644
--- a/database/seeds/DatabaseSeeder.php
+++ b/database/seeds/DatabaseSeeder.php
@@ -12,6 +12,7 @@ class DatabaseSeeder extends Seeder
     public function run()
     {
         $this->call(UsersTableSeeder::class);
-		$this->call(TopicsTableSeeder::class);
+        $this->call(TopicsTableSeeder::class);
+        $this->call(RepliesTableSeeder::class);
     }
 }
diff --git a/database/seeds/RepliesTableSeeder.php b/database/seeds/RepliesTableSeeder.php
new file mode 100644
index 000000000..5d894fca8
--- /dev/null
+++ b/database/seeds/RepliesTableSeeder.php
@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Seeder;
+use App\Models\Reply;
+use App\Models\User;
+use App\Models\Topic;
+
+class RepliesTableSeeder extends Seeder
+{
+    public function run()
+    {
+        // 所有用户 ID 数组，如：[1,2,3,4]
+        $user_ids = User::all()->pluck('id')->toArray();
+
+        // 所有话题 ID 数组，如：[1,2,3,4]
+        $topic_ids = Topic::all()->pluck('id')->toArray();
+
+        // 获取 Faker 实例
+        $faker = app(Faker\Generator::class);
+
+        $replys = factory(Reply::class)
+                        ->times(1000)
+                        ->make()
+                        ->each(function ($reply, $index)
+                            use ($user_ids, $topic_ids, $faker)
+        {
+            // 从用户 ID 数组中随机取出一个并赋值
+            $reply->user_id = $faker->randomElement($user_ids);
+
+            // 话题 ID，同上
+            $reply->topic_id = $faker->randomElement($topic_ids);
+        });
+
+        // 将数据集合转换为数组，并插入到数据库中
+        Reply::insert($replys->toArray());
+    }
+}
diff --git a/resources/views/replies/create_and_edit.blade.php b/resources/views/replies/create_and_edit.blade.php
new file mode 100644
index 000000000..894a35590
--- /dev/null
+++ b/resources/views/replies/create_and_edit.blade.php
@@ -0,0 +1,56 @@
+@extends('layouts.app')
+
+@section('content')
+
+<div class="container">
+  <div class="col-md-10 offset-md-1">
+    <div class="card ">
+
+      <div class="card-header">
+        <h1>
+          Reply /
+          @if($reply->id)
+            Edit #{{ $reply->id }}
+          @else
+            Create
+          @endif
+        </h1>
+      </div>
+
+      <div class="card-body">
+        @if($reply->id)
+          <form action="{{ route('replies.update', $reply->id) }}" method="POST" accept-charset="UTF-8">
+          <input type="hidden" name="_method" value="PUT">
+        @else
+          <form action="{{ route('replies.store') }}" method="POST" accept-charset="UTF-8">
+        @endif
+
+          @include('common.error')
+
+          <input type="hidden" name="_token" value="{{ csrf_token() }}">
+
+          
+                <div class="form-group">
+                    <label for="topic_id-field">Topic_id</label>
+                    <input class="form-control" type="text" name="topic_id" id="topic_id-field" value="{{ old('topic_id', $reply->topic_id ) }}" />
+                </div> 
+                <div class="form-group">
+                    <label for="user_id-field">User_id</label>
+                    <input class="form-control" type="text" name="user_id" id="user_id-field" value="{{ old('user_id', $reply->user_id ) }}" />
+                </div> 
+                <div class="form-group">
+                	<label for="content-field">Content</label>
+                	<textarea name="content" id="content-field" class="form-control" rows="3">{{ old('content', $reply->content ) }}</textarea>
+                </div>
+
+          <div class="well well-sm">
+            <button type="submit" class="btn btn-primary">Save</button>
+            <a class="btn btn-link float-xs-right" href="{{ route('replies.index') }}"> <- Back</a>
+          </div>
+        </form>
+      </div>
+    </div>
+  </div>
+</div>
+
+@endsection
diff --git a/resources/views/replies/index.blade.php b/resources/views/replies/index.blade.php
new file mode 100644
index 000000000..8f98f8384
--- /dev/null
+++ b/resources/views/replies/index.blade.php
@@ -0,0 +1,61 @@
+@extends('layouts.app')
+
+@section('content')
+<div class="container">
+  <div class="col-md-10 offset-md-1">
+    <div class="card ">
+      <div class="card-header">
+        <h1>
+          Reply
+          <a class="btn btn-success float-xs-right" href="{{ route('replies.create') }}">Create</a>
+        </h1>
+      </div>
+
+      <div class="card-body">
+        @if($replies->count())
+          <table class="table table-sm table-striped">
+            <thead>
+              <tr>
+                <th class="text-xs-center">#</th>
+                <th>Topic_id</th> <th>User_id</th> <th>Content</th>
+                <th class="text-xs-right">OPTIONS</th>
+              </tr>
+            </thead>
+
+            <tbody>
+              @foreach($replies as $reply)
+              <tr>
+                <td class="text-xs-center"><strong>{{$reply->id}}</strong></td>
+
+                <td>{{$reply->topic_id}}</td> <td>{{$reply->user_id}}</td> <td>{{$reply->content}}</td>
+
+                <td class="text-xs-right">
+                  <a class="btn btn-sm btn-primary" href="{{ route('replies.show', $reply->id) }}">
+                    V
+                  </a>
+
+                  <a class="btn btn-sm btn-warning" href="{{ route('replies.edit', $reply->id) }}">
+                    E
+                  </a>
+
+                  <form action="{{ route('replies.destroy', $reply->id) }}" method="POST" style="display: inline;" onsubmit="return confirm('Delete? Are you sure?');">
+                    {{csrf_field()}}
+                    <input type="hidden" name="_method" value="DELETE">
+
+                    <button type="submit" class="btn btn-sm btn-danger">D </button>
+                  </form>
+                </td>
+              </tr>
+              @endforeach
+            </tbody>
+          </table>
+          {!! $replies->render() !!}
+        @else
+          <h3 class="text-xs-center alert alert-info">Empty!</h3>
+        @endif
+      </div>
+    </div>
+  </div>
+</div>
+
+@endsection
diff --git a/resources/views/replies/show.blade.php b/resources/views/replies/show.blade.php
new file mode 100644
index 000000000..163b50463
--- /dev/null
+++ b/resources/views/replies/show.blade.php
@@ -0,0 +1,42 @@
+@extends('layouts.app')
+
+@section('content')
+
+<div class="container">
+  <div class="col-md-10 offset-md-1">
+    <div class="card ">
+      <div class="card-header">
+        <h1>Reply / Show #{{ $reply->id }}</h1>
+      </div>
+
+      <div class="card-body">
+        <div class="card-block bg-light">
+          <div class="row">
+            <div class="col-md-6">
+              <a class="btn btn-link" href="{{ route('replies.index') }}"><- Back</a>
+            </div>
+            <div class="col-md-6">
+              <a class="btn btn-sm btn-warning float-right mt-1" href="{{ route('replies.edit', $reply->id) }}">
+                Edit
+              </a>
+            </div>
+          </div>
+        </div>
+        <br>
+
+        <label>Topic_id</label>
+<p>
+	{{ $reply->topic_id }}
+</p> <label>User_id</label>
+<p>
+	{{ $reply->user_id }}
+</p> <label>Content</label>
+<p>
+	{{ $reply->content }}
+</p>
+      </div>
+    </div>
+  </div>
+</div>
+
+@endsection
diff --git a/routes/web.php b/routes/web.php
index e01d4b2fa..b242ee913 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -30,3 +30,5 @@
 Route::post('upload_image', 'TopicsController@uploadImage')->name('topics.upload_image');
 
 Route::get('topics/{topic}/{slug?}', 'TopicsController@show')->name('topics.show');
+
+Route::resource('replies', 'RepliesController', ['only' => ['index', 'show', 'create', 'store', 'update', 'edit', 'destroy']]);
\ No newline at end of file