DBF Automatic Trailer and Container Interior Washing System has been produced for the purpose of washing and, if necessary, disinfection of the interior of trucks, trailers and similar closed body vehicles carrying loads and foodstuffs. As the robot enters the trailer, it sprays softening detergent to cover the entire inner surface until it goes to the tip, and on the way back, it brings the softened dirt on all surfaces to the ground with water sprayed with 60 Bar pressure. In the dirty water that has landed on the ground, it is applied to the back of the trailer with pressurized water from the spray nozzles under the robot. The washing process is carried out completely automatically under the control of an operator and is completed in a short time.