The invention discloses an air distribution screen suitably used for a storage battery pole plate curving chamber. The air distribution screen comprises at least one air distribution unit, wherein the at least one air distribution unit is arranged at the side edge of the curing chamber, each air distribution unit internally comprises a ventilation cavity and an air supply cavity, the ventilation cavity is provided with a rectification segment and a pressurized segment along an air flow direction, the cross section of a cavity body of the rectification segment is gradually increased along an air direction, an air inlet is arranged at the top of the rectification segment, a diversion plate is arranged in the rectification segment, the bottom of the rectification segment is connected with the pressurized segment, pressurized plates with holes are arranged in the pressurized segment, the air supply cavity is communicated with the pressurized segment, and air outlets are arranged at parts, facing the side surface of the curing chamber, of the air supply cavity. The air distribution screen disclosed by the invention can have very high air supply uniformity for the curing chamber structures at arbitrary size and total air volume, the air speed difference among all air outlets is less than 10%, and the air distribution screen has relatively high universality.