The invention discloses a continuous stepping device for a screw plate of a filter. The continuous stepping device comprises a rack which is sequentially provided with lower pad iron, a lower die plate, a lower base plate, a concave die plate, a discharging plate, a discharging backing plate, a fixing plate, an upper base plate, an upper die plate and upper pad iron from bottom to top. A plate conveying device is arranged between the concave die plate and the discharging plate. A first material guiding block and a second material guiding block are arranged at the front end of the plate conveying device. A phi 6 punching assembly, a phi 13 forming die assembly, a phi 8.05 punching assembly, a budding die assembly, a phi 9 punching assembly, a forming die assembly, a blanking die assembly, an inner guide sleeve assembly and a cutting assembly are sequentially arranged between the upper die plate and the lower die plate from left to right according to the corresponding processes. Compared with the prior art, the continuous stepping device for the screw plate of the filter has the following advantages that relevant machining modules for manufacturing the screw plate are equipped on one device, by combining the stepping conveying device, material movement of the screw plate is achieved according to the set step pitch, and therefore automatic machining is completed, the production cost and the maintenance cost are reduced, production benefits of enterprises are increased, and popularizing is convenient.