Verification method of mobile terminal, mobile terminal and verification system

The invention relates to the field of network communication, and provides a verification method of a mobile terminal. The verification method comprises the steps of sending an initial hardware identification number, initial IMEI (International Mobile Equipment Identity) information and initial agent information to a pairing database by a mobile terminal to enable the pairing database to establish a group of pairing relationships based on the initial hardware identification number, the initial IMEI information and the initial agent information; storing multiple groups of the pairing relationships in the pairing database; receiving a pairing verification request and obtaining a current hardware identification number and current IMEI information by the mobile terminal; and sending the current hardware identification number and the current IMEI information to the pairing database by the mobile terminal to enable the pairing database to verify whether the current hardware identification number and the current IMEI information correspond to any group of the pairing relationships in the pairing database. The invention also provides a mobile terminal and a system. Whether the IMEI code of the mobile terminal is changed can be tampered according to the method above.