The Mars flux has great influence on the solar panel temperature. This paper establishes a mathematical model of the Mars albedo flux and analyzes the variation of the solar panel temperature in the near Mars area and the far Mars area when the Mars infrared radiation and the Mars albedo change. The research indicates that the influence are different when the spacecraft is at different orbital heights. There exists a critical orbit height. When the orbit height is less than the critical height， the influence is very large， and when it is great than this critical height， the influence could be ignored. This research provids a reference for the future Mars exploration.