To provide an oxygen mask storage box which can facilitate the storage of a mask without obstructing the releasing of the mask.

This oxygen mask storage box is equipped with a housing 10 and a door 12. In this case, the housing 10 includes a network in order to distribute oxygen which is fed from general piping or a chemical oxygen generating device. The door 12 is arranged under the storage box at a specified location. Then, on the internal surface of the door or the internal surface of the housing, at least one receiving base means 20, and at least one latch 24 are provided. The receiving base means 20 determines respective holding locations of the oxygen masks 16. The latch 24 can move from a location to constitute a mask holding socket to a location to release the mask 16 by corresponding with the closing of the door 12.