The invention discloses a washable bag filter and relates to the technical field of filtering equipment. The problem that the bag filter is worn when the filter bag of the conventional bag filter is frequently changed is solved. The washable bag filter comprises a filtering cylinder, a cover body, a blow-off pipe and a support frame, wherein the cover body is in flange connection with the filtering cylinder; an air outlet is formed in the cover body; a plurality of air inlet pipes I are arranged at the periphery of the filtering cylinder; a plurality of filter bags are arranged in the filtering cylinder; filter cages matched with the filter bags are arranged in the filter bags; a water inlet pipe is arranged above the filtering cylinder; one end of the water inlet pipe is connected with awater tank; a plurality of spray headers are arranged at one end, which is positioned at one end of the filtering cylinder, of the water inlet pipe; a water pump is arranged on the water inlet pipe; avibration exciter is arranged below the filtering cylinder; an air inlet pipe II is connected onto the cover body; an air pump is arranged at the other end of the air inlet pipe II; and a heat sourceis arranged on the air inlet pipe II. The washable bag filter disclosed by the invention has the advantages of cleaning and drying the filter bags, saving the process of detaching and replacing the filter bags, avoiding from producing wear of the bag filter due to frequent replacement of the filter bags and saving manpower and material resources.