This invention discloses a method for verifying the legality of a mobile terminal user. First of all, a verifying chip is set in the mobile terminal and the character information of a user card corresponding to the mobile terminal is kept on the chip, when the user identity is needed to be verified, the chip fetches the user card character information directly from the card and compares if the fetched information is the same with that kept by itself, if so, it judges if the user identity is legal or not. If the user identity is illegal, the normal work of the mobile terminal is stopped to protect the legitimate right of the terminal users. |