PURPOSE: A device for removing foreign substances in a fishing net is provided to efficiently remove foreign substances adhering to a fishing net and to cleanly maintain the environment of a fishing village by preventing dusts from spreading.CONSTITUTION: A device(100) for removing foreign substances in a fishing net(101) comprises a main body frame(110), a fishing net inflow circulation roller(120), a fishing net discharge circulation roller(130), a ventilation discharge device(140), a dust collector(150), a blow circulation roller(160), and a brush roller(170). The main body frame comprises an inlet(111) and an outlet(112). The fishing net inflow circulation roller is installed in the lower part of the inlet. The fishing net discharge circulation roller is installed in the lower part of the outlet and discharges the fishing net from which foreign substances are separated. The ventilation discharge device is installed in the upper part of the main body and discharges foreign substances by inhaling. The dust collector is installed to one side of the main body frame and deposits foreign substances through an exhaust duct(141). The blow circulation roller blows the fishing net using a plurality of blow rubber bars(161) and separates foreign substances. The brush roller separates foreign substances using a brush(171).COPYRIGHT KIPO 2013본 발명은 정치망 이물질 제거장치에 관한 것으로, 더욱 상세하게는 본체프레임 내부로 정치망을 유입시키면서 이물질을 제거하고 탈리된 이물질은 집진장치를 통해 집진부로 모아 제거할 수 있도록 함으로써 정치망에 고착된 이물질 제거시 먼지 발생을 최소화하여 쾌적한 생활 환경을 조성할 수 있도록 하는 개선된 정치망 이물질 제거장치에 관한 것이다.