From the technical breakthrough of artificial intelligence, in speech, image recognition and other aspects, in a specific field, under a specific category, the level of computer has been similar or even higher than that of human beings. In addition, artificial intelligence has also made a breakthrough in the field of cognition, which is traditionally considered to be difficult to achieve success by machines. Machines have incomparable advantages in search, calculation, storage, optimization and so on. However, they can not compete with humans in perception, reasoning, induction, learning and so on.