In order to solve the problems of difficult communication between teams and difficult mutual transmission of perception and decision information in complex environment, this paper realizes data transmission simulation in complex geographical environment through communication simulation, personnel movement simulation and centralized control of network data. The communication simulation of complex geographical environment is to simulate the geographical environment such as plains, mountains, grasses and Woods through the log-normal shadow propagation loss model. This paper extracts moving data according to the actual movement of people and simulates the movement of people, so that the use of radio is consistent with the actual situation. The network data centralized control technology adopts SDN (Software Defined Network) architecture to build the communication support capability enhancement system, which greatly enhances the operability and modifiability of the system. The experimental results show that the radio wave simulation environment of the system is close to the actual transmission environment of radio waves in the real environment.