The utility model provides a sedimentation impurities eliminating device for an oil well pump. The sedimentation impurities eliminating device for the oil well pump comprises a short section, a sieve tube and a coupling, one end of the sieve tube is connected with an upper connection through threads, the other end of the sieve tube is provided with threads to be connected with the coupling, an oil outlet hole is arranged in the side surface of the tube wall of the sieve tube, and the sieve tube uses a falling objects preventing sieve tube. After repeated testing, the sedimentation impurities eliminating device for the oil well pump can effectively control sand and impurities not to enter a pump in an oil pumping process and an oil extraction process, has the function of protecting a fixed valve ball and a ball seat auxiliary, and is scientific and reasonable in structure, novel in design, and simple to manufacture, and reduces cost, prolongs service life of the oil well pump, and improves oil pumping production efficiency, and therefore beneficial guarantee is provided to the safe production and stability of an oil field.