The present invention relates to a buoyancy control device for fishing, in which a plurality of cylindrical weight members in a cylindrical shape are connected to a fishing line and are combined with a lower portion of a float, so that when the buoyancy control is performed, a user can selectively combine and detach only the cylindrical weight members, thereby simplifying an assembly process and securing use efficiency. In addition, the manufacturing cost is reduced due to a simple shape and the selling cost is also reduced.COPYRIGHT KIPO 2018본 발명은 원통형상의 다수개의 원통추부재를 낚시줄에 연결하여 낚시찌 하부에 결합함으로써, 부력조절시 원통추부재만 선택적으로 결합 및 탈거가능하여 조립과정이 간단해져 사용의 효율성이 확보되고, 단순한 형상으로 인하여 제작비용이 절감되고 이로 인해 판매비용 또한 절감된다는 장점이 있다.
