The invention is related to a mask sterilization device,Contains: a bag body,It has a holding space which can be sealed,One side of the holding space is provided with an opening which can be sealed；A sterilization unit,In the holding space,It can slowly release chlorine dioxide gas to fill the holding space,In the holding space, a mask can be placed on the opening side,And make the chlorine dioxide gas produced by the sterilization unit in a closed holding space,It can sterilize the mask,To increase the use time of masks,Or sterilization between repeated uses,Avoid infection during repeated use.本創作係與一種口罩滅菌裝置有關，包含有：一袋體，具有一可被密閉的容置空間，該容置空間之一側設有一可以密閉的開口；一滅菌單元，設於該容置空間內，其可緩慢釋出二氧化氯氣體充滿於該容置空間內，該容置空間內可以由該開口側放置口罩，並使滅菌單元產生二氧化氯的氣體於密閉的容置空間內，使其可對口罩進行滅菌的動作，以增加口罩的使用時間，或是重複使用之間的滅菌動作，避免重複使用時感染。
