An anti-snoring device includes an upper tooth brace holder, a lower tooth brace holder, a first rotary latching part and a second rotary latching part, in which the upper tooth brace holder and the lower tooth brace holder can be soften through heating by warm water in order to allow a user to tightly bite for shaping, and be respectively sleeved on upper and lower rows of teeth of the user after cooling to solidify. It is characterized by an upper holder hanged forwardly at a lower side of the upper tooth brace holder, and a lower holder hanged forwardly at a top side of the lower tooth brace holder. The first rotary latching part can be installed on the upper holder or the lower holder in a rotatable manner, and the second rotary latching part can be installed on the upper holder or the lower holder in a rotatable manner to be detachably latched with the first rotary latching part, such that the lower row of teeth of the user can be kept forwardly beyond the upper row of teeth through the latching, in order to keep the jaw of the user extend forwardly for widening the respiratory, for solving problem of snoring.一種止鼾器包括一上牙套支架、一下牙套支架、一第一旋轉卡掣件及一第二旋轉卡掣件;其中上牙套支架及下牙套支架可利用溫水加熱軟化後讓使用者緊緊咬住以進行塑形,待冷卻固化後供分別套接於使用者的上、下排牙齒。其特徵在於上牙套支架於底側向前懸伸一上支架,下牙套支架於頂側向前懸伸一下支架,第一旋轉卡掣件可轉動地裝設於上支架或下支架,第二旋轉卡掣件可轉動地裝設於上支架或下支架而與第一旋轉卡掣件作可釋放的卡合,藉此卡合保持使用者的下排牙齒向前超出上排牙齒,以保持使用者的下顎向前凸出而拉寬呼吸道,改善容易打鼾的情形。1‧‧‧止鼾器2‧‧‧上牙套支架3‧‧‧下牙套支架4‧‧‧第一旋轉卡掣件5‧‧‧第二旋轉卡掣件21‧‧‧上支架31‧‧‧下支架41‧‧‧溝槽51‧‧‧凸起部M1‧‧‧硬質的材料層M2‧‧‧具有低溫可塑性的材料層
