Abstract: Simulation of control and communication is the precondition for aircraft communication system design.Radio propagation loss models for mobile communication are studied,and the point-to-point mode of Longley-Rice model suits the aircraft communication simulation most for its satisfaction with the special requirement. Shuttle radar topography mission digital elevation model(SRTM-DEM)is used as detailed terrain profile data of the propagation path for point-to-point mode in simulation.Compared with the theoretical analysis value,the prediction of transmission loss is highly reliable.