A hydrogen-oxygen breathing mask includes a cover body unit, a containing unit, and at least one gas generating unit connected to the containing unit. The cover unit includes a body suitable for covering the nose, and two wearing parts. The accommodating unit is disposed on the inner surface of the body and includes a liquid holding member defining a accommodating space suitable for accommodating a working liquid. The top of the liquid accommodating member has a plurality of exhausts communicating with the accommodating space. hole. At least one of the gas generating units includes a shell member and an electrolysis member adapted to electrolyze the working liquid into a hydrogen-oxygen mixed gas. By using the electrolysis element to electrolyze the working liquid to form the hydrogen-oxygen mixed gas, and then cooperate with the arrangement of the exhaust holes, the hydrogen-oxygen mixed gas can be discharged upwards and can be sucked by the user to achieve the effect of actively providing clean air.一種氫氧氣呼吸罩,包含一罩體單元、一容裝單元,及至少一連接該容裝單元的造氣單元。該罩體單元包括一適用於包覆鼻子的本體,及二配戴件。該容裝單元設置於該本體的內表面,並包括一界定出一適用於容裝一作用液體之容置空間的盛液件,該盛液件頂部具有多個連通該容置空間的排氣孔。至少一該造氣單元包括一殼體件,及一適用於將該作用液體電解成一氫氧混合氣體的電解件。藉由該電解件電解該作用液體形成該氫氧混合氣體,再配合該等排氣孔的設置,該氫氧混合氣體能向上排出並供使用者吸取,達成主動提供乾淨空氣的功效。