This paper analyzes the current situation and difficulties of mobile communication experimental teaching and expounds the necessity of 5G mobile communication practical teaching, which designs a virtual simulation teaching platform for the practical teaching of postgraduates in communication and gives the specific construction scheme. The platform includes basic simulation experiments such as the configuration, installation, and opening of the core network and base station equipment and the comprehensive simulation experiments such as network signal coverage analysis, drive test and network optimization in large and complex application scenarios. The teaching practice shows that this experimental platform can meet the needs of professional graduate students in the mobile communication practice training and cultivate the students’ innovative thinking and ability to solve complex engineering and technical problems.