The utility model discloses a clean-keeping mask, particularly discloses a mask convenient to clean vomit. The mask comprises a mask surface, a vomit collecting bag and a sealing string, and is characterized in that the vomit collecting bag is hidden inside the mask surface, and the sealing string is embedded in the opening of the vomit collecting bag. By aid of the mask, passengers and navigation operating personnel can collect and clean the vomit by themselves without others' help or finding vomit bags temporarily when they vomit due to bumping of vessels and vehicles and motion sickness attack, and surrounding environments are not polluted.