diff --git a/app/Http/Controllers/Api/RepliesController.php b/app/Http/Controllers/Api/RepliesController.php
new file mode 100644
index 0000000..e2d2bd4
--- /dev/null
+++ b/app/Http/Controllers/Api/RepliesController.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Requests\Api\ReplyRequest;
+use App\Models\Reply;
+use App\Models\Topic;
+use App\Models\User;
+use App\Transformers\ReplyTransformer;
+
+class RepliesController extends Controller
+{
+    public function store(ReplyRequest $request, Topic $topic, Reply $reply)
+    {
+        $reply->content = $request->get('content');
+        $reply->topic_id = $topic->id;
+        $reply->user_id = $this->user()->id;
+        $reply->save();
+        return $this->response->item($reply, new ReplyTransformer())->setStatusCode(201);
+    }
+
+    /**
+     * @param Reply $reply
+     * @return \Dingo\Api\Http\Response
+     * @throws \Illuminate\Auth\Access\AuthorizationException
+     * @throws \Throwable
+     */
+    public function destroy(Reply $reply)
+    {
+        $this->authorize('destroy', $reply);
+        $reply->delete();
+        return $this->response->noContent();
+    }
+
+    /**
+     * @param Topic $topic
+     * @return \Dingo\Api\Http\Response
+     */
+    public function index(Topic $topic)
+    {
+        $replies = $topic->replies()->recent()->paginate(20);
+        return $this->response->paginator($replies, new ReplyTransformer());
+    }
+
+    public function userIndex(User $user)
+    {
+        $replies = $user->replies()->recent()->paginate(20);
+        return $this->response->paginator($replies, new ReplyTransformer());
+    }
+}
diff --git a/app/Http/Requests/Api/AuthorizationRequest.php b/app/Http/Requests/Api/AuthorizationRequest.php
index d739564..d4b39ee 100644
--- a/app/Http/Requests/Api/AuthorizationRequest.php
+++ b/app/Http/Requests/Api/AuthorizationRequest.php
@@ -2,7 +2,6 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
 
 class AuthorizationRequest extends FormRequest
 {
diff --git a/app/Http/Requests/Api/CaptchaRequest.php b/app/Http/Requests/Api/CaptchaRequest.php
index 4e4f83e..2314c1e 100644
--- a/app/Http/Requests/Api/CaptchaRequest.php
+++ b/app/Http/Requests/Api/CaptchaRequest.php
@@ -2,19 +2,9 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
 
 class CaptchaRequest extends FormRequest
 {
-    /**
-     * Determine if the user is authorized to make this request.
-     *
-     * @return bool
-     */
-    public function authorize()
-    {
-        return true;
-    }
 
     /**
      * Get the validation rules that apply to the request.
diff --git a/app/Http/Requests/Api/FormRequest.php b/app/Http/Requests/Api/FormRequest.php
new file mode 100644
index 0000000..0a3e9ab
--- /dev/null
+++ b/app/Http/Requests/Api/FormRequest.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+use Illuminate\Foundation\Http\FormRequest as BaseFormRequest;
+
+class FormRequest extends BaseFormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            //
+        ];
+    }
+}
diff --git a/app/Http/Requests/Api/ImageRequest.php b/app/Http/Requests/Api/ImageRequest.php
index 51298a8..857add1 100644
--- a/app/Http/Requests/Api/ImageRequest.php
+++ b/app/Http/Requests/Api/ImageRequest.php
@@ -2,19 +2,9 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
 
 class ImageRequest extends FormRequest
 {
-    /**
-     * Determine if the user is authorized to make this request.
-     *
-     * @return bool
-     */
-    public function authorize()
-    {
-        return true;
-    }
 
     /**
      * Get the validation rules that apply to the request.
diff --git a/app/Http/Requests/Api/ReplyRequest.php b/app/Http/Requests/Api/ReplyRequest.php
new file mode 100644
index 0000000..863e156
--- /dev/null
+++ b/app/Http/Requests/Api/ReplyRequest.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Requests\Api;
+
+/**
+ * Class ReplyRequest
+ * @property string content
+ * @package App\Http\Requests\Api
+ */
+class ReplyRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'content' => 'required|min:2',
+        ];
+    }
+}
diff --git a/app/Http/Requests/Api/SocialAuthorizationRequest.php b/app/Http/Requests/Api/SocialAuthorizationRequest.php
index 13648fb..63b7eee 100644
--- a/app/Http/Requests/Api/SocialAuthorizationRequest.php
+++ b/app/Http/Requests/Api/SocialAuthorizationRequest.php
@@ -2,19 +2,8 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
-
 class SocialAuthorizationRequest extends FormRequest
 {
-    /**
-     * Determine if the user is authorized to make this request.
-     *
-     * @return bool
-     */
-    public function authorize()
-    {
-        return true;
-    }
 
     /**
      * Get the validation rules that apply to the request.
diff --git a/app/Http/Requests/Api/TopicRequest.php b/app/Http/Requests/Api/TopicRequest.php
index 5c1bcd1..e01b45d 100644
--- a/app/Http/Requests/Api/TopicRequest.php
+++ b/app/Http/Requests/Api/TopicRequest.php
@@ -2,7 +2,6 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
 
 /**
  * Class TopicRequest
@@ -13,15 +12,6 @@ use Illuminate\Foundation\Http\FormRequest;
  */
 class TopicRequest extends FormRequest
 {
-    /**
-     * Determine if the user is authorized to make this request.
-     *
-     * @return bool
-     */
-    public function authorize()
-    {
-        return true;
-    }
 
     public function rules()
     {
diff --git a/app/Http/Requests/Api/VerificationCodeRequest.php b/app/Http/Requests/Api/VerificationCodeRequest.php
index 4cbfbcb..852a66f 100644
--- a/app/Http/Requests/Api/VerificationCodeRequest.php
+++ b/app/Http/Requests/Api/VerificationCodeRequest.php
@@ -2,19 +2,9 @@
 
 namespace App\Http\Requests\Api;
 
-use Illuminate\Foundation\Http\FormRequest;
 
 class VerificationCodeRequest extends FormRequest
 {
-    /**
-     * Determine if the user is authorized to make this request.
-     *
-     * @return bool
-     */
-    public function authorize()
-    {
-        return true;
-    }
 
     /**
      * Get the validation rules that apply to the request.
diff --git a/app/Models/Reply.php b/app/Models/Reply.php
index 7040d3a..5f5fbb0 100644
--- a/app/Models/Reply.php
+++ b/app/Models/Reply.php
@@ -2,6 +2,17 @@
 
 namespace App\Models;
 
+/**
+ * Class Reply
+ * @property int id
+ * @property string content
+ * @property string created_at
+ * @property string updated_at
+ * @property int user_id
+ * @property int topic_id
+ * @property User user
+ * @package App\Models
+ */
 class Reply extends Model
 {
     protected $fillable = ['content'];
diff --git a/app/Transformers/ReplyTransformer.php b/app/Transformers/ReplyTransformer.php
new file mode 100644
index 0000000..51a0cf3
--- /dev/null
+++ b/app/Transformers/ReplyTransformer.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: xing
+ * Date: 2018/6/10
+ * Time: 21:52
+ */
+
+namespace App\Transformers;
+
+
+use App\Models\Reply;
+use Carbon\Carbon;
+use League\Fractal\TransformerAbstract;
+
+class ReplyTransformer extends TransformerAbstract
+{
+    protected $availableIncludes = ['user'];
+
+    public function transform(Reply $reply)
+    {
+        return [
+            'id' => (int)$reply->id,
+            'user_id' => (int)$reply->user_id,
+            'topic_id' => (int)$reply->topic_id,
+            'content' => $reply->content,
+            'created_at' => $reply->created_at instanceof Carbon ? $reply->created_at->toDateTimeString() : $reply->created_at,
+            'updated_at' => $reply->updated_at instanceof Carbon ? $reply->updated_at->toDateTimeString() : $reply->updated_at,
+        ];
+    }
+
+    public function includeUser(Reply $reply)
+    {
+        return $this->item($reply->user, new UserTransformer());
+    }
+}
\ No newline at end of file
diff --git a/routes/api.php b/routes/api.php
index 6c5e680..860b1bd 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -76,7 +76,17 @@ $api->version('v1', [
         $api->patch('topics/{topic}', 'TopicsController@update')->name('api.topics.update');
         //删除话题
         $api->delete('topics/{topic}', 'TopicsController@destroy')->name('api.topics.destroy');
-
+        // 发布回复
+        $api->post('topics/{topic}/replies', 'RepliesController@store')
+            ->name('api.topics.replies.store');
+        //删除回复
+        $api->delete('replies/{reply}', 'RepliesController@destroy')->name('api.replies.destroy');
+        // 话题回复列表
+        $api->get('topics/{topic}/replies', 'RepliesController@index')
+            ->name('api.topics.replies.index');
+        //某个用户的回复列表
+        $api->get('users/{user}/replies', 'RepliesController@userIndex')
+            ->name('api.users.replies.index');
     });
 
 });