The invention belongs to the field of air conditioner filter screens, and particularly relates to closed air conditioner filter screen cleaning equipment which comprises a frame, a sliding rod is arranged in the frame, the inner wall of the frame is movably connected with the two ends of the sliding rod, a motor is arranged at the left end of the sliding rod, and the left end of the sliding rod is fixedly connected with the right end of the motor. Clamping devices are evenly arranged at the two ends of the frame, the inner wall of the frame is movably connected with the outer surfaces of the clamping devices, a cleaning device is arranged on the outer surface of a sliding rod, the outer surface of the sliding rod is movably connected with the inner wall of the cleaning device, a water tank is arranged at the top of the frame, and the top of the frame is fixedly connected with the bottom of the water tank. The clamping device comprises a clamping plate, an extension spring is arranged at the left end of the clamping plate, and the left end of the clamping plate is fixedly connected with the right end of the extension spring, aiming at the defects in the prior art, the invention provides the closed air conditioner filter screen cleaning equipment, and the problem that the manual air conditioner filter screen cleaning effect is poor is solved.