The invention discloses an engineering vehicle cleaning integrated system and a control method thereof. The system is characterized by comprising a vehicle washing section lane for a to-be-washed engineering vehicle to pass through, wherein side edge water spraying pipe nets which are arranged on the two sides and are used for cleaning vehicle wheels and two side vehicle bodies are arranged in thevehicle washing section lane, and the system is further provided with a vehicle washing door pipe net which is used for washing the top of the vehicle and a carriage from the upward side of the engineering vehicle. According to the engineering vehicle cleaning integrated system and the control method thereof, the engineering vehicle can be well cleaned, the use is convenient and fast, the cleaning effect is good, and the application prospect is good.