A crank pin lining extractor comprises a lead screw (1), a fixing screw nut (2), a supporting cylinder (3), a pipe-jacking (4), a bearing (5), a power screw nut (6), and handles (7). The crank pin lining extractor is characterized in that the crank pin lining extractor supporting cylinder (3) is bucket-shaped, a center hole (A) is formed in the bottom portion of the supporting cylinder (3), the fixing screw nut (2) is installed at the right end of the lead screw (1), the lead screw (1) penetrates through the center hole (A), the pipe-jacking (4), the bearing (5) and the power screw nut (6) are sequentially installed at the right end of the lead screw (1), the bearing (5) is inlaid in the center of the power screw nut (6), and the two handles are symmetrically arranged on the power screw nut (6). The crank pin lining extractor is simple in structure, safe to operate, time-saving and labor-saving, short in downtime, improved in oil production rate, and capable of preventing sand blocking and failures of a well with a severe sand output, increasing crude output, and improving the economic benefits of an enterprise.