The invention provides an aluminum capacitor positive electrode foil product having high voltage resistance and a manufacturing method thereof. the manufacturing method mainly processes an aluminum foil substrate in a vacuum environment and comprises the steps of: heating the aluminum foil substrate; ion bombarding a surface of the aluminum foil substrate to form a pyramid surface layer; reverse sputtering the aluminum foil substrate for surface cleaning, decontamination and degreasing; depositing the aluminum foil substrate by an aluminum target material to form a deposition layer; oxidizing an outer surface of the deposition layer and spraying mixed gases on the outer surface of the deposition layer of the aluminum foil substrate to form an oxidized crystallizing layer; cooling the aluminum foil substrate; and rolling the aluminum foil substrate into a finished product.