The conclusion that machine can’t be cheated has brought about long insignificant debate about whether machine can be cheated or not on the basis of wrong law analysis way,which moreover intensified the mistake in the way of law analysis.With the foreign legislation of fraud by computer and the development of our country’s judicial interpretation,the judgment is losing his role.The point that the theft and fraud can be distingnished easily with the traditional norm that whether the property that the——gets is chating from the original owner and the misunder standing based on that should be abandoned right now.