In the present invention, the frame and the frame when the fishing boat is put in the water to catch the fishing fish by giving buoyancy as a whole or partially mounted on the frame of the garden fishing used to lift up the fish caught by fishing. This allows the net to float on the surface by buoyancy so that the fish can be caught without a great deal of effort, and if the garden is drowned in the water due to the careless handling of the user, the fishing net can be hung on the surface of the water by hooking with a fishing needle. At the same time, if you want to catch the fish at night fishing, the buoyancy device of the new fishing gardening board can greatly improve the convenience of use by clearly identifying the position and depth of the gardening network without using a separate lantern. Is disclosed. The buoyancy device for fishing net according to the present invention is made of a synthetic resin material, molded or foamed to form a hollow (hollow) in the interior, forming a garden net along the centerline in the longitudinal direction of the inner surface A frame insertion groove is formed to which the frame is fitted, and a clip mounting groove into which a fixed clip is fitted is formed on the circumferential surface of the position spaced a certain distance from both ends to the center. A plurality of buoyant material bodies having a concave-convex shape bent portion and a chemite mounting groove formed on an upper surface and a lower surface corresponding to an outer end of the clip mounting groove and the bent portion; It is configured to include a chemistry (Chemical Light) that emits light when used at night in the state fitted to the upper surface and the lower surface of the buoyancy material body corresponding to the outer end of the clip mounting groove and the bent portion.본 고안에서는 낚시로 낚아 올린 고기를 건져 올리는데 사용되는 뜰채의 프레임(Frame)에 대하여 전체적으로 또는 부분적으로 장착되어 부력(浮力)을 부여함으로써 낚시로 낚은 고기를 포획하기 위하여 뜰채를 물속에 넣는 경우 프레임과 뜰망이 부력에 의하여 수면에 떠오르도록 하여 큰 힘을 들이지 않고도 고기