A vehicle after-sales service system has a main controller and a cloud platform communicating with the main controller. The main controller is adapted to be equipped on a vehicle and to transmit vehicle information set by an original equipment manufacturer to the cloud platform. The vehicle information can include vehicle body information, chassis information, motive power information, entertainment information and error information. The cloud platform receives and stores the vehicle information from the main controller for providing after-sales service to provide innovative service and to meet the owner's need.