The invention relates to a filter cartridge reversal ash removal and dust treatment device. Reverse blowing and reversal are combined, so that filter cartridge external circular surface cleaning effect is effectively improved, and the problems that operation is inconvenient and a filter cartridge can be damaged easily are effectively solved. According to the technical scheme, the filter cartridgereversal ash removal and dust treatment device comprises a shell, wherein an upper rotary table and a lower rotary table which are arranged up and down are arranged inside the shell, a filter cartridge is arranged at the outer circles of the two rotary tables, the lower end of the filter cartridge is connected with a supporting disk, a square through slot is formed in the supporting disk, a fixedplate is arranged below the supporting disk, a supporting column is fixed on the fixed plate, two fixture blocks are fixed on the fixed plate, each fixture block is provided with an upward inclined plane, the supporting disk moves downwards and can extrude the fixture blocks to move back and forth by virtue of the front side wall and the rear side wall of the square through slot, a pin is arrangedat the outer circle of the supporting column, clamping slots are respectively formed in the side wall of the square through slot, one end, close to the supporting column, of each fixture block is connected with a digging rope, the other end of the digging rope is wound on the outer circle of the supporting column, and a first torsional spring is connected between the lower end of the supporting column and the fixed plate. The filter cartridge reversal ash removal and dust treatment device is novel in conception and smart in structure.