Aiming at the shortcoming of launching soft control system and chain control system, put forward a new gas-gun launching control system design scheme which consists of piston assembly and sealed cabin. Through introduce composition and work principle of launching control system, establish the 3D model of gas-gun, carry out dynamic analysis of control system stress performance and transmit the performance into math model for theory calculation, use Matlab software for computer simulation to acquire dynamic relation and key parameter of every part of system. The feasibility of the design in principle could be verified, though the analysis of calculation results. Finally the conclusion can be obtained: the new type of control system is safe and reliable, and it can achieve the desire requirements.