diff --git a/app/models/challenge.rb b/app/models/challenge.rb
index 9bfb89b4b..434812234 100644
--- a/app/models/challenge.rb
+++ b/app/models/challenge.rb
@@ -51,8 +51,8 @@ class Challenge < ApplicationRecord
   end
 
   # 开启挑战
-  def open_game user_id, challenge_id, shixun
-    game = games.select{|game| game.challenge_id = challenge_id && game.user_id == user_id}.first
+  def open_game user_id, shixun
+    game = self.games.select([:status, :identifier]).where(user_id: user_id).first
     if game.present?
       shixun.task_pass || game.status != 3 ? "/tasks/#{game.identifier}" : ""
     else
diff --git a/app/views/challenges/index.json.jbuilder b/app/views/challenges/index.json.jbuilder
index dc122b8c4..6b92be411 100644
--- a/app/views/challenges/index.json.jbuilder
+++ b/app/views/challenges/index.json.jbuilder
@@ -17,7 +17,7 @@ if @challenges.present?
     json.passed_count challenge.user_passed_count
     json.playing_count challenge.playing_count
     json.name_url shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)
-    json.open_game challenge.open_game(@user.id, challenge.id, @shixun)
+    json.open_game challenge.open_game(@user.id, @shixun)
     if @editable
       json.edit_url edit_shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)
       json.delete_url shixun_challenge_path(challenge, shixun_identifier: @shixun.identifier)