The nature of Artificial Intelligence (AI) is functional imitation of human intelligence (HI). Although they have some similarities, they are different in essence because of their differences in the material carrier of thought, the position in intelligent activities and the thinking procedure. AI has not the creativity and sociality which belong only to human beings, so it is nothing but the extension of HI. It can surpass HI partially, but can’t triumph over or take the place of HI in the end.