The stable precision is the core index of stabilized platform, and this article from the experimental point of view to study the stabilization precision nonlinear factors influence degree. Therefore this article established a physical model of single axis stabilized platform, and built the Lagrange dynamics equation of the platform. Analysis result of nonlinear factors in the kinetic equation like motor brush friction、line torque、gyro nonlinear、motor torque fluctuation. Fully considering the influence factors, the article design the experimental platform of qualitatively validated these factors. Using the principle of using a single variable, this paper completed the four set of experiments about the influence degree of these factors. So designers developed optoelectronic platform, to pay more attention to performance parameters of the motor, gyro, to provide a reference for the researchers to design platform.