The invention discloses a sterilization tank wastewater recovery pool comprising a recovery pool body, a water conveying pipe, a semicircular block I, a semicircular block II, an arc-shaped clamping plate, a spring I, a fastening bolt I, a nut I, an elastic gasket, a hinge, a fixing ring I, a fixing ring II, a T-shaped rod I, a T-shaped rod II, a spring II, a fastening bolt II, a nut II, a springIII, a rack I, a rack II, balls, a filter screen, a fixing block, a T-shaped rod III, a T-shaped rod IV, a T-shaped block, a limiting groove and a return spring. According to the invention, the fastening bolt II is screwed, and then the fastening bolt II moves along the nut II; the fastening bolt II moves to be separated from the rack I; under the action of the elastic force of the spring III, therack I moves into a groove to be separated from the rack II; under the action of the elastic force of the spring II, the T-shaped rod I moves to drive the filter screen to move upwards; the filter screen moves upwards to filter impurities in waste water; and when the filter screen moves to the upper side of the water surface of the waste water, and impurities on the filter screen are convenient to clean by users.