Abstract: As the distributed redundant structure is widely used in safety computers without corresponding fault-tolerant management mechanism, this paper used the time triggering mechanism based communication mode, and put forward GMP (Group Membership Protocol) algorithm based high-speed communication fault tolerance mechanism. Then the fault-tolerant mechanism was verified through the safety computer platform with double 2 out of 2 structure, the results showed that the mechanism had obvious optimization effect on the fault tolerance of safety computer communication.