Abstract: In order to research the effect of ion thrusters work performance parameters on output characteristics, an ion thrusters input/output work performance parameter control model was built by theoretical equation, which was also used to calculate work performance parameters of the 30 cm diameter ion thruster and the 20 cm diameter ion thruster. Thrust measure experiment was carried out to verify the calculation results. The verification results indicate that, after doubly charged xenon ion ratio, beam current density and thrust minimum mean squared error were introduced in thrust correction, thrust theoretical calculation values are in rough agreement with the experimental results. The calculation error is less than 1 mN compared with the experimental results, which proves that the thrust correction method used in this paper is reasonable. Ion thruster input/output performance parameter control model provides reference to semi-physical simulation modeling process, and it can be used in thruster work performance parameters optimization and in electrical supply parameters and propellant supply parameters confirm during electrical system united experiment as well.