A group real-name verification system and method based on the cell-phone bonding and WEB, it can achieve the verification to the IM software group administrator identification. The system includes: the group server, the authentication information server, the logging server, and the cell-phone bonding server. Firstly, the group server verifies the user authority, and allocates an un-activated group number to the competent user, and then, sends the request whether user information is complete to the authentication information server, and the authentication information server verifies the user's information or prompts the user to input information, and verifies whether the group application number of the user bonding the cell-phone or prompts the user to bond the cell-phone. The authentication information server feeds back to the group server the information whether the user information is incomplete, and if fully, the group server activates the group number, otherwise, not activates the group number. Using the system and method in the invention, it can effectively achieve the identification verification of the group's administrator, in favor of finding and restraining the group administrator, to achieve effectively managing the group and network environment.