The invention relates to the technical field of oil field oil recovery, belongs to a machining method for an iso-wall thickness curtate hypocycloid screw pump andstator pump drum, and used for improving the pump system efficiency and the pump detecting period and prolonging the service life. The problems that the screw pump system efficiency is low, and the submergence depth in the middle and later periods is high are solved. The iso-wall thickness curtate hypocycloid screw pump is composed of the stator pump drum (1), a rubber lining (2), a metal rotor (3) and a mold cavity (4). The stator pump drum (1) is in adhesive connection with the rubber lining (2). The metal rotor (3) is in interference fit with the rubber lining (2). The mold cavity (4) is located between the metal rotor (3) and the rubber lining (2). The invention further discloses the machining method for the stator pump drum of the iso-wall thickness curtate hypocycloid screw pump. The machining method for the iso-wall thickness curtate hypocycloid screw pump and the stator pump drum has the advantages that the matching precision of the rotor is improved, the mutual impact performance of a stator and the rotor is reduced, and the service life is prolonged.