The invention discloses a vehicle washing device for a van vehicle body. The vehicle washing device comprises a vehicle head. The right end of the vehicle head is connected with the vehicle body through a pin. The left end of the vehicle body is fixedly connected with a switch. The upper end of the vehicle body is fixedly connected with a water storing box. The upper end of the water storing box is fixedly connected with a shell body. A washing device is arranged in the vehicle body. A base plate is hinged to the right end of the vehicle body. The upper end of the water storing box is fixedly connected with a water pumping device. The lower end of the water pumping device is fixedly connected with a filtering device. The lower end of the vehicle body is provided with a water collecting box. According to the vehicle washing device for the van vehicle body, a moving-type vehicle washing mode is adopted, a car can be washed through door-to-door service, and the time of a client is shortened; by adopting the water pumping device and the filtering device, washing water can be recycled, water resource is saved, waste is avoided; and by adopting the washing device, the car can be washed instead of manual work, and workload is relieved.