The present invention relates to a device for repelling birds, the device which repels wild birds such as doves, sparrows, various immigrant birds, confuses birds sense of orientation by using a magnetic field, interrupts birds from obtaining a view by reflecting light, and prevents birds from approaching. The device for repelling birds comprises an upper post (40) in a cylindrical shape made of a non-magnetic body； an upper protection cap (50) which is made of a non-magnetic body, comprises a plurality of magnet units (60) stacked therein, is inserted and installed in the upper post (40), and protects the magnet units (60)； a lower post (80) in a cylindrical shape made of a non-magnetic body； an upper end cap (10) which is joined to an upper side of the upper post (40), prevents approach of birds by reflecting light, and has a cross-sectional area in the shape of a reversed U； a lower protection cap (70) which is made of a non-magnetic body, comprises a plurality of magnet units (60) stacked therein, is inserted and installed in an upper side of the lower post (80), and protects the magnet units (60)； a lower end cap (90) which is inserted and joined to a lower portion of the lower post (80), prevents approach of birds by reflecting light, and has a closed lower portion； a post connection unit (30) which connects the upper post (40) to the lower post (80) and has a flexible structure to enable the upper post (40) to move in vertical and horizontal directions； and a connection part fixation cap (20) which is joined, to be able to slide, to the upper post (30) and covers the outside of the post connection part (30) to prevent the post connection part (30) from being bent.본 발명은 비둘기, 참새, 각종 철새 등의 야생 조류를 쫓아내며, 자장을 이용하여 조류의 방향 감각에 혼란을 발생시키고 빛을 반사시켜 조류의 시야 확보를 방해함으로써 조류가 접근하지 못하도록 하는 조류 퇴치구에 관한 것으로서, 비자성체로 형성된 원주 형상의 상부 지주(40)와； 비자성체로 형성되고 내부에 복수의 자석유닛(60)이 적층되며 상기 상부 지주(40)의 내측에 삽입 설치되어 자석유닛(60)을 보호하는 상부 보호캡(50)과； 비자성체로 형성된 원주 형상의 하부 지주(80)와； 상기 상부 지주(40)의 상측에 결합되고 빛을
