Abstract: Aiming at the rapid development of mobile communication system and the relative lag of teaching content,the 4G mobile communication virtual simulation platform is introduced into the mobile communication system curriculum in this paper. Taking the actual process of deployment, construction and maintenance of 4G network of telecom operators as a reference, the training exercises were carefully designed to integrate the complex theory of 4G system and networks into training. Practice has proved that this kind of teaching reform is conducive to students to closely link theoretical knowledge with the actual system, promote the improvement of students'professional quality and innovation ability, and promote the cultivation of communication engineering professionals.