At present, the training courses for first-class builders are generally divided into two types, one is online courses, and the other is offline training courses. Online class is a learning method that many people choose now. As for the reliability of the training course, I will analyze it with you from three aspects. (1) With the development of network technology, online classroom is not a little better than physical teaching. People can communicate with each other through the Internet, such as videos and languages. Not limited by place, time and space, the network plays a convenient role in training. As long as the training institution you choose is mature and reliable, and the content of the training course is of high quality, the teaching effect of the online course and the training course is basically the same, and there will not be much difference. Therefore, only by choosing professional training institutions can we have reliable training courses. There are not many educational institutions with excellent vocational qualification training in the market, but good institutions will be sought after by the public, which can be judged by various appearances, such as class teacher, course price, teaching effect and so on.