In the scientific and technological circles, scientists will give a clear definition to every scientific and technological term. Robots have a history of several decades, but there are still different opinions on the definition of robots, and there is no unified opinion. One of the reasons is that robots are still developing, and new models and functions are constantly appearing. The fundamental reason is that robot involves the concept of human and becomes a philosophical question that is difficult to answer. Just as the word robot was originally born in science fiction, people are full of illusions about robots. Perhaps it is precisely because of the vague definition of robot that people are given full imagination and creative space.