Air conditioner and cleaning method for filter screen of air conditioner

The invention relates to an air conditioner and a cleaning method of a filter screen thereof, the air conditioner comprises a middle frame, a front panel, the filter screen and a cleaning assembly, the middle frame comprises a front side face and a top side face which are connected, and a rail extending from the top side face to the front side face is arranged on the middle frame; the front panel covers the front side face of the middle frame to form a containing cavity used for containing the evaporator. The filter screen is movably connected with the track; the cleaning assembly is arranged in the containing cavity and comprises a container used for containing condensate water generated by the evaporator and a pipeline communicated with the container, the pipeline comprises a spraying pipe extending to the side, facing the middle frame, of the front panel, and in the cleaning mode, the filter screen moves from the top side face to the front side face through the track. Meanwhile, the spray pipe sprays conde