The utility model discloses a plunger extractor of a plunger pump. The plunger extractor comprises a screw (1), a screw sleeve (2), a handle (3), a bracket (4), a support (5), a sleeve head (6) and a T-shaped rod (7), wherein the support (5) is of a cylinder structure and is provided with a ladder-shaped internal thread, the bottom of the support is provided with an annular bottom plate, the lower part of the bracket (4) combined by a hollow circular truncated cone and a circular tube is provided with a ladder-shaped external thread, the bracket (4) is matched with the support (5), the upper part of the bracket (4) is provided with a center through hole, the lower part of the screw (1) is provided with the hollow sleeve head (6) which is provided with a special opening relative to a right-angle bend and is connected with the T-shaped rod (7) in a hanging manner, the lower part of the T-shaped rod is provided with the external thread, the upper part of the screw (1) is provided with an external thread, and the screw penetrates through the center through hole of the bracket (4) and is matched with the screw sleeve (2) with the bidirectional handle (3). The plunger extractor has the advantages of simple structure, easiness in manufacture, convenience for operation, safety and reliability, time and labor saving when used for extracting a plunger out of the plunger pump, capabilities of reducing pump maintenance time, improving operation rate of the plunger pump, and increasing crude oil yield.