A plumb bob improvement structure for a fishing tackle, comprising: a falling body, a through hole provided at a top end of the falling body for connecting the fishing line, and a circular arc shaped ring disposed at a lower edge of the through hole and a connection of the falling body； The arc-shaped blade can make the falling body entangled with the fishing line when it sinks into the water, which can avoid the knotting of the fishing line and increase the time of the thread-removing, so that the fishing line can be more efficiently recovered, and the circular-shaped blade is also It can make the falling body less likely to shift when it sinks into the water, can hit the fishing area more easily, and smoothly enter the water surface, which can accelerate the time when the fishing line enters the water and increase the catch.一種釣具之鉛錘改良結構，其包含有墜體、設於墜體之頂端用以連接釣線的貫穿孔、環設於貫穿孔下緣與墜體連接處的圓弧形葉片；該多個圓弧形葉片，可使墜體沉入水中時，不易與釣線纏繞，可避免釣線打結進而增加拆線的時間，因此可更有效率補獲漁隻，並且該圓弧形葉片還可使墜體在沉入水中時較不易產生偏移，可更輕易的命中釣區，並順利的進入水面，可加速釣線進入水裡的時間，提高更多的漁獲量。
