With the continuous development of science and technology, the convenience spacecraft brought to us has been everywhere. During the orbit operation, the spacecraft interacts with the complex space environment, which makes the surface and internal materials appear charging and discharging phenomenon, and thus may lead to shortened its life or cannot work properly, or even scrapped and so on. The surface charge and the medium charge of the spacecraft during orbital operation are discussed in depth. It has certain reference value for the system to study the spacecraft charged and the protection design of spacecraft charge and discharge.
