The invention discloses a message authentication method based on a semi-trusted management center in the vehicle networking. The user communicates with RSU and other vehicles arranged on both sides ofthe road through OBU, and extracts, analyzes and effectively utilizes the message, so that the vehicle runs more safely, and the user can obtain more efficient service at the same time. The inventionis based on the environment of a semi-trusted management center, more realistic, at the same time the vehicle's pseudonym is generated by the vehicle, RSU and STA together, RSU and STA trace the identity of the vehicle jointly, A single party cannot obtain the true identity of the vehicle, thus the safety is improved.The invention adopts the self-healing key distribution method to exclude the revoked vehicles from the group, so that the vehicles do not need to store and query the revoked list, the storage space, the resources are calculated and the searching time are reduced, and the efficiency of the message authentication is improved.