Authentication method for limiting mobile phone without using by others

The invention provides an authentication method for a user to prevent others from using the mobile telephone of the user illegally. The method is characterized in that the steps are as follows: in the process of providing the communication service for the user, all the phone number, the corresponding IMEI of the mobile telephone, the service time and the related user information are collected by a service supporting system, and then the collected user information is stored in a BOSS system; when the user sends the request of preventing others from using the mobile telephone, an operator judges whether the user has the right to do the operation according to the stored information; if the related certificate provided by the user accords with the stored user information, the user has the right to do the operation of preventing other from using the mobile telephone and the operator provides the corresponding limitation for the mobile telephone according to the request of the user. The invention guarantees the convenience of the user using the mobile telephone and the security of a password and fully meets the individual requirement of the user; the construction cost is low and the invention can be used on a large scale; the sharing of the password of the phone number and that of the mobile telephone is realized, which reduces the inconvenience of memorizing a plurality of passwords; the invention can also prevent the mobile telephone of the user from being stolen or being used illegally after the mobile telephone is stolen.