A buoy comprises a first body and a second body made of a material with different specific gravity, wherein the first body and the second body are pivoted, so that they can be pivoted relative to each other. The first body is provided with a connecting part to connect with the fishing line. In this creation, when fish or shrimp are hooked, the first body on the fishing line will be pulled and sunk under the water, but the buoyancy of the water will push the second body to pivot with respect to the first body, so as to make the second body appear warped on the water surface, so as to achieve the significant prompt effect.一種浮標,包括有以比重不同的材質製成之一第一本體及一第二本體,其中第一本體與第二本體以一樞軸樞接,藉此令二者可相對樞擺。第一本體設有一結合部以結合於釣線上。本創作利用魚或蝦上鉤時將結合於釣線上之第一本體拉扯沉入水下,惟水的浮力作用將推動第二本體相對第一本體樞擺,進而使第二本體在水面上呈現翹起狀,藉此達到顯著的提示功效。