The invention relates to an environment-friendly coke wet quenching vehicle and a coke wet quenching method. The environment-friendly coke wet quenching vehicle is characterized in that a movable wallis arranged on the lower portion of the front wall of a compartment of the environment-friendly coke wet quenching vehicle, is of a double-layer structure and is divided into an inner-layer movable wall and an outer-layer movable wall, the inner-layer movable wall is made of grate plates with permeable holes, and the diameters of the permeable holes are smaller than the average block size of cokeblocks; the inner-layer movable wall and the outer-layer movable wall can be driven by corresponding driving devices to be horizontally turned over; sealing structures are arranged at a joint of theouter-layer movable wall and a vehicle; a slide cover plate and guide rails are arranged on the top of the compartment; the bottom of the compartment is of an oblique structure, and drain outlets areformed in the bottom and the rear wall of the compartment. The environment-friendly coke wet quenching vehicle and the coke wet quenching method have the advantages that coke can be quickly quenched,moisture in coke can be effectively reduced and can reach stable values, burning loss of the coke can be decreased, and pollutant effusion can be reduced.