The invention discloses a floss ring structure, which comprises a first ring body, a second ring body, floss and a brake part.The first ring body comprises a first holding space, a first connecting part, an outlet hole and a brake groove.The second ring body comprises a second holding space, a second connecting part, a lead hole and a slot. The first ring body and the second ring body are detachably connected with each other by the first connecting part and the second connecting part.The floss is arranged in the first holding space of the first ring body, and one end of the floss is penetrated into the slot of the second ring body by the outlet hole of the first ring body through the lead hole of the second ring body.The brake piece can be slidably embedded in the brake groove, and the brake part of the brake piece is adjacent to the first connection part in the first ring body. When the brake piece is slided towards the first connection part, the brake part will top against the floss.本創作係揭露一種牙線環結構，其包含第一環體、第二環體、牙線及制動件。第一環體包含第一容置空間、第一連接部、出線孔及制動槽。第二環體包含第二容置空間、第二連接部、引線孔及開槽，第一環體及第二環體藉由第一連接部及第二連接部可拆卸地相互連接。牙線設置於第一環體之第一容置空間中，且牙線之一端由第一環體之出線孔經第二環體之引線孔穿至第二環體之開槽中。制動件可滑動地嵌合於制動槽中，且制動件之制動部位於第一環體內鄰近第一連接部處，當制動件朝第一連接部方向滑動時，制動部將頂抵牙線。
