The invention provides an automatic and quick wiping-free locomotive cleaning system used at a G-series high-speed train stop station. The automatic and quick wiping-free locomotive cleaning system comprises a stop track, an automatic control station, a station signal receiver, a station and G-series high-speed train interspace blockage system, a wiping-free locomotive cleaning liquid spraying system, a high-pressure washing system and a wastewater-purifying controllable circulation system. Instruments of the sub-systems are sent through the automatic control station to achieve full-automaticoperation of the whole system. Especially by adopting the station and G-series high-speed train interspace blockage system, the getting on and off safety of passengers is improved, articles are also prevented from falling to positions under trains. Full-automatic, quick and efficient train body cleaning can be achieved within 4-5 minutes for passengers to get on or off or transfer through convenient wiping-free locomotive cleaning, the cleanliness of the trains is improved, and the labor intensity of workers is reduced compared with cleaning in workshops. Purification and reutilization of partof waste water can be also achieved by adopting the wastewater-purifying controllable circulation system, water resources are saved, and the economic burden of traditional locomotive cleaning is reduced.