The invention belongs to the technical field of computer network, in particular to an identity security verification and checking method. The method is desired to solve the problem of low security in identity security verification and checking. The method comprises the following steps: A) check guiding; B) acquiring and transmitting real-time information on check requests; and C) checking and verifying at background. The invention has the advantages of convenient operation, fast checking of identity verification, and high security. It is required that the information to be verified in the real-time check request information is the same as the credential information used in the identity authentication or the to-be-verified credential information points to the same credential holder and that the shape requirement of the real-time shape information of the to-be-verified document and the checking guidance information is not beyond the set error range, the identity security verification can be a success, therefore, avoiding the identity verification from pictures and video information containing the identity information and ensuring that a tester who passes the complex verification does hold the identity information.