Binding method of communication number, apparatus and terminal thereof

The invention relates to a binding method of a communication number, an apparatus and a terminal thereof. The method comprises the following steps of determining that a new SIM card is inserted into the terminal; reading an application program installed in the terminal; and binding account information of the application program with a new communication number corresponding to the new SIM card. In the invention, after the terminal determines that the new SIM card is inserted, the account information of the installed application program is bound with the new communication number of the new SIM card. By using the method, the apparatus and the terminal of the invention, the communication number bound with each account information of a user can be timely and completely changed into the new communication number; convenience is provided for the user; and an information leakage risk and various kinds of possible losses which are generated because the bound communication number is not changed timely are avoided.