The curved arc type balance structure of the fishing line includes: a curved balance beam having a straight section, a horizontal section, and a curved arc section for continuing the straight section and the horizontal section, the curved balance pole having the opposite direction The inner edge and the outer edge； and a flexible toughness line are slidably disposed on the inner edge of the curved balance bar, and the top end and the bottom end of the flexible toughness line are respectively connected to the bus bar and the fish hook line of the fishing line.一種釣竿釣線之彎弧式天秤結構，包括：一弧形天秤桿，具有一直段、一橫段、以及一彎弧段為接續該直段及該橫段，弧形天秤桿具有位於相對向的內緣及外緣；以及一可撓韌性線，可滑動的設於弧形天秤桿的內緣，可撓韌性線的頂端及底端供分別與釣線的母線及魚鈎子線相連結。
