The invention provides a vehicle and a control module for sliding door therefor, which relates, in particular, to the field of vehicle electronic control. The vehicle includes a vehicle body, a sliding door, a switch, and a door control module. The vehicle body is provided inside with a main power supply and a vehicle body controller; the sliding door is mounted on the vehicle body; the switch is arranged at a position where the sliding door is in contact with the vehicle body, and connects a circuit on the sliding door and the vehicle body when the sliding door is closed; the door control module is arranged in the sliding door, and includes an backup power supply and a controller that are integrated, the backup power supply being electrically connected with each electrical component on the sliding door, the controller being electrically connected with each component on the sliding door that needs to be controlled, and being communicated with the vehicle body controller; and the backup power supply and the controller provide power support and control support for each component on the sliding door respectively when the sliding door is opened. The invention can enable the vehicle to maintain normal operation of the sliding door under wireless wiring connection, and has the advantages of simple structure, versatility and high integration.