Abstract: The present invention relates to a secure communication authentication method and system in a distributed environment. By using the method and the system of the present invention, disadvantages in a platform identity certification process in TCG remote certification are alleviated, a method for platform identity certification is expanded, and by combining three technologies, that are, zero-knowledge proof, a Kerberos framework and a virtual TPM, a new verification method is designed, which is mainly intended to make improvement in the aspects in the existing method such as platform information exposure, a trusted third-party bottleneck and complexity avoidance. By using the method and the system of the present invention, the problems of privacy exposure and efficiency in mutual verification between remote servers in the existing distributed system.