Abstract: The environments are very different between Martian Surface and near-earth space. To estimate the output power of the Solar Array on the Mars surface is not easy, which is affected by the solar radiation, temperature, dust and diffuse irradiance. A method to calculate the output power of Solar Array in Martian Surface Environment is proposed in this paper based on a survey to the results of research all over the world. Models about how the illumination, temperature and dust to affect the power generation of the Solar Array on Martian surface are established. Those numeric models and method are used to improve the power balance of the Mars Rover in the first Mars exploration mission of china and are a reference for the intending Mars and other deep-space exploration missions.