The utility model relates to an integrated oxygen supply device integrating oxygen production and oxygen storage. The integrated oxygen supply device consists of a hydrogen producing device, a hydrogen storing device and an air inlet/outlet pipeline system, wherein the hydrogen producing device consists of a shell, a steamer type inner container and a square sealing flange cover; the hydrogen storing device consists of a square shell, a sealing flange cover and an embedded hydrogen storing interlayer; the air inlet/outlet pipeline system consists of a vapor input system, a hydrogen output system and a purified hydrogen output system. In the integrated oxygen supply device, the hydrogen producing device is arranged inside the hydrogen storing deice, so that a hydrogen source can be supplied to the hydrogen storing device. A drier and a hydrogen storing interlayer are arranged inside the integrated hydrogen supply device, so that convenient conditions are provided for drying and purification of hydrogen. The problem of uncontrollable reaction of a hydrolysis device is solved. Oxygen production and oxygen storage are integrated, so that the design is simple, the space is saved, convenience is brought to control, and pure hydrogen fuel is provided for fuel batteries of different models. The integrated oxygen supply device can be suitable for industrial production.