Robots can be divided into two categories: industrial robots and service robots. Industrial robots are mainly used in Song Xin, An Chuan and other production fields, while civil robots include commercial robots used in commercial scenes, such as Paiyi Dayi, and robots serving families, such as Xiaopi and Xianer. Of course there are also military robots. In fact, military robots can be regarded as a kind of service robots, only serving professional fields.