A Raft protocol variant, parallel commit Raft (PC-Raft), was proposed, in order to solve the strict serialization design of log submission in Raft algorithm. In PC-Raft, pipeline was used in the log submission stage and the log buffer was redesigned to realize out-of-order submission of logs. The RDMA network was used as the transmission method to improve the concurrency of log transmission and speed up the transmission. In the log execution stage, batch processing was used to package multiple instructions and send them to the state machine for execution one by one. For the ghost recurrence problem that occurs, the combination of LSN and term number was used to ensure the security of the log. In order to solve the problem of log holes caused by disordered log submission, the leader election algorithm was redesigned, and temporary leaders were added to the election to ensure that the elected leaders can recover the logs as quickly as possible. Test results show that PC-Raft has a significant performance improvement in throughput compared with Raft, and the delay is lower. In the case of frequent log instruction dependency, the throughput is higher and the latency is lower compared with the existing Raft based variant.