An air enclosure with independent double layer air chambers is constituted by disposing a middle film between a first outer film and a second outer film which are folded together, in which the length of the middle film is shorter than the first outer film and the second outer film, and the lower sides of the three parties are lined up with one another to allow an air filling passageway to be formed on one common end of the first outer film and the second outer film by means of hot sealing and in the meantime, a first air inlet and a plurality of first air chambers to be formed by adhering the first outer film to the middle film and a second air inlet and a plurality second air chambers to be formed by adhering the middle film to the second outer film. When the air in the air filling passageway is filled into the first air chamber to cause it to be expanded via the first air inlet and in the meantime, filled into the second air chamber to cause it to be expanded via the second air inlet, and when any one of the first air chamber and the second air chamber is broken, the another can provide the cushioning protection effect.