It is a kind of can rotation buoy, it includes have: one mark body, one mark tail, one mark foot. The mark can be swum on the water surface as a floating body. The wherein fixed sleeve in the lower end of the mark tail, the affixed link of the lower end. One 8-shaped change of impaling on the link. The rotation of the Drawing upon 8-shaped change and have the function of buoy can rotation. Bendable folding endurance between the Drawing upon 8-shaped change and the link, and make buoy that there is oscillatory and rotation. The buoy can comply with the flow of water naturally and rotate to eliminate the thrust of water in Bubble Region or the biggish waters of flow velocity, and can it is steadily upright in water.一種可自轉的浮標，其包含有：一標身、一標尾、一標腳。該標身為一浮體，能夠漂浮在水面上。其中該標尾的下端固設一套管，該套管下端固接一掛環。該掛環上穿掛一8字形轉環。憑藉該8字形轉環的可自轉性而使浮標具有可自轉的功能。憑藉該8字形轉環與該掛環之間的可彎折性，而使浮標具有擺動性與轉動性。該浮標在氣泡區或流速較大的水域中，能自然順應水勢做轉動來消除水的推力，而能穩定地直立在水中。
