In view of the existing problems and shortcomings of system communication in the shadow channel of vehicle-mounted Sat-com on the move(SOTM),based on the characteristics of SOTM channel,the reason for low transmission efficiency in the channel is analyzed,and an algorithm of self-adaptive control based on burst communication is put forward.According to the analysis of shadow channel,it is concluded that the original transmission method is of poor adaptability.By introducing a frame-number self-adaptive algorithm,the high pocket loss rate of shadow channel is decreased,and the communication efficiency is increased.The experimental results show that self-adaptive burst control for shadow channel is able to effectively decrease the pocket loss rate and improve the efficiency of channel communication.