In the VANETs, task offloading can effectively solve the problem of insufficient resource storage and computing resources of vehicles, but a stand-alone mobile edge computing (MEC) server is usually unable to meet the task offloading requirements in vehicleintensive areas. Aiming at the above shortcoming, a joint offloading method based on task urgency is proposed. When the vehicle offloads the task to the local MEC server, the local MEC server will send the task to the nearby MEC server to meet the task deadline according to the task urgency, deadline and the load of servers. The simulation results show that compared with the traditional scheme, the proposed scheme reduces the overall task failure rate of the whole system by 17%, optimizes the server load of the whole network and increases the reliability of the network.