diff --git a/app/controllers/api/topic/resource.go b/app/controllers/api/topic/resource.go
index da54bcf..b3ee999 100644
--- a/app/controllers/api/topic/resource.go
+++ b/app/controllers/api/topic/resource.go
@@ -35,6 +35,16 @@ func UserIndex(c *gin.Context, currentUser *userModel.User, tokenString string)
 		})
 }
 
+// Show topic detail
+func Show(c *gin.Context) {
+	topic, _, ok := getTopic(c, nil)
+	if !ok {
+		return
+	}
+
+	controllers.SendOKResponse(c, viewmodels.TopicApi(topic))
+}
+
 // Store 发布 topic
 func Store(c *gin.Context, currentUser *userModel.User, tokenString string) {
 	var req request.Store
diff --git a/app/controllers/api/topic/utils__.go b/app/controllers/api/topic/utils__.go
index f67bb05..3334113 100644
--- a/app/controllers/api/topic/utils__.go
+++ b/app/controllers/api/topic/utils__.go
@@ -26,8 +26,10 @@ func getTopic(c *gin.Context, currentUser *userModel.User) (*topicModel.Topic, i
 	}
 
 	// 权限
-	if ok := policies.TopicPolicyOwner(c, currentUser, int(topic.UserID)); !ok {
-		return nil, id, false
+	if currentUser != nil {
+		if ok := policies.TopicPolicyOwner(c, currentUser, int(topic.UserID)); !ok {
+			return nil, id, false
+		}
 	}
 
 	return topic, id, true
diff --git a/routes/api.go b/routes/api.go
index 515eb46..ad8f887 100644
--- a/routes/api.go
+++ b/routes/api.go
@@ -89,5 +89,7 @@ func registerAPI(r *router.MyRoute, middlewares ...gin.HandlerFunc) {
 			wrapper.GetToken(topic.Destroy))
 		// 话题列表
 		topicRouter.Register("GET", "api.topics.index", "", topic.Index)
+		// 话题详情
+		topicRouter.Register("GET", "api.topics.show", "/:id", topic.Show)
 	}
 }