The utility model relates to a sinker structure for fishing.The sink line consists of a top part.One column,A bottom end and a hanging ring；The top part is above the column.In the shape of a circular cone,And set up a space.And connecting the hanging ring in the holding space；The column is polygonal.It is connected with the top part and the bottom part.The bottom end is arranged under the column.In the shape of a circular cone,The hanging ring piece is connected with the top part by threading.A round hole is arranged at the upper end for the fishing line to pass through.The lower end is provided with a bolt or a screw which is threaded or welded in the holding space.For fishing with fishing line；So that the sinking speed of the fishing sinker can reach the fixed point quickly and accurately.It is not easy to get rusted and stuck, and it will not cause environmental pollution.And can achieve the effect that it is not easy to slide when placed on the ship.一種釣魚用沉子結構，該沉子係包含一頂端部、一柱體、一底端部及一掛環件；該頂端部位於柱體的上方，呈環形錐面狀，且開設一容置空間，並於該容置空間內連接該掛環件；該柱體呈多角柱狀，並與頂端部及底端部作連接；該底端部設於柱體的下方，呈環形錐面狀，該掛環件與頂端部穿設連接，上端設一圓孔供釣線穿設，下端設一插銷或一螺絲穿設螺接或焊接於容置空間內，以供釣魚時搭配釣線使用；藉此使本創作之釣魚用沉子使用時下沉速度快準確到達定點、不易生鏽卡線及不會造成環境污染，並能達到放置在船上不易滑動之功效。
