The present invention relates to a device for preventing lower catch of a fishhook. The present invention includes: a soft and elastic needle eye insertion portion (100) for insertion of a needle eye (11) tied with a fishing line (20) a line guiding portion (110) allowing the fishing line (20) to pass therethrough, formed of the same material as the needle eye insertion portion (100), and unfolded to form a straight line with the needle eye insertion portion (100) once the fishing line (20) is snatched after maintaining L-shaped bending at an upper end of the needle eye insertion portion (100) and a catch preventing tool (200) whose both ends (210) are rotated toward a needle stem (12) once the line guiding portion (110) is unfolded by snatching or the like after the ends (210) maintaining V-shaped widening toward the top of a needle tip (13) of a fishhook (10) inserted into the needle eye insertion portion (100) on both surfaces of a front surface corner portion (120) where the needle eye insertion portion (100) and the line guiding portion (110) are in contact with each other. The catch preventing tool effectively blocks the top of the needle tip, and thus the needle tip is not caught by water plants or bedrocks in the water. Accordingly, damage to the equipment can be prevented to the maximum extent possible. When the catch preventing tool is formed as a fake bait that has the shape of a small fish, a fresh bait and the fake bait can be used at the same time for the fishhook and large fish luring effects can be enhanced.COPYRIGHT KIPO 2017본 발명은 낚시바늘의 밑걸림 방지장치에 관한 것으로서, 낚싯줄(20)이 묶인 바늘귀(11)가 삽입되도록 부드럽고 탄성력이 우수한 재질의 귀삽입부(100)와 낚싯줄(20)이 통과되고, 귀삽입부(100)와 같은 재질로 귀삽입부(100) 상단에 ㄱ자 형태로 절곡된 상태를 유지하다가 낚싯줄(20)이 챔질 되면 귀삽입부(100)와 일자 형태를 이루도록 펴지는 줄안내부(110) 귀삽입부(100)와 줄안내부(110)가 접하는 전면 모서리부(120) 양쪽면에서 귀삽입부(100)에 끼워진 낚시바늘(10)의 바늘끝(13) 위를 향하여 양 끝단(210)이 "V"자 형태로 벌어진 상태를 유지하다가 챔질 등에 의해 줄안내부(110)가 펴지면 양 끝단(210)이 바늘허리(12)를 향하여 회전되는 걸림방지구(200) 로 이루어져서 바늘끝 위를 효과적으로 막아주는 걸림방지구에 의해 바늘끝이