In order to make the visible light load which fixed on the general high precision stabilized platform image clearly and track the target stably，this paper analyzes the factors that affect visual axis stability，and designs the stable precision of the platform．Based on the structure and control system，the paper establish a visual axis stabilization system．This system isolates the posture changes of the aircraft from the visual axis, making the visual axis of the optical sensor be stable in the inertial space. By fixing a visible light load on the high precision stabilized platform, the experiment verifies the effect of isolation on the fiveaxis debugging instrument. The results show that when the azimuth, pitch and roll framework move within the design range, the accuracy of visual axis stability is 4 mrad, fully meet the design requirements of general high precision stabilized platform.