A liquid-washing air purifying and disinfecting device comprises a water storage body, the water storage body is filled with water at the bottom, a first air outlet is arranged on the upper part of its sidewall, and an air inlet is arranged on the middle part of its sidewall; a circulating water device comprises a water pump and an outlet pipe, the water pump is arranged at the center of the bottom of the water storage body, the outlet pipe is vertically arranged, and its bottom is connected to the water pump, the water outlet of the outlet pipe extends upward into the middle of the water storage body; a filtering device comprises multiple annular filter layers, the annular filter layers are located above the water surface, the air inlet is arranged below the annular filter layers and above the water surface.