The triaxial gyro stabilized platform is widely used in military fields such as airborne and shipborne, as well as civil fields such as public security and fire control. It has the function of ensuring the visual axis stability of photoelectric equipment on the moving carrier. This paper proposes a method to solve the problems of forward design shortage and algorithm verification difficulty of triaxial gyro stabilized platform, establish the state space equation through the analysis of the kinematics and dynamics equations of platform, modeling and simulation analysis are done using Simulink toolbox in MATLAB and S -Function for the stability loop, position loop, speed loop three-loop control structure used in the design, the system response of different input signals is simulated .The establishment of the control model and algorithm simulation verification provide reliable theoretical support and basis for algorithm research in practical engineering, and have a strong guiding role for system design.