To provide a disaster-preventing hat improved with disaster-preventing function, capable of easily being carried and also used for a long time.

This disaster-preventing hat having a crown part 12 formed by covering the surface of the felt layer constituted as an almost semi-spherically by joining 6 pieces of felt with a surface cloth 12b and the reverse surface of the same with a reverse surface cloth is provided by constituting the pieces of the felt and surface cloth 12b and reverse surface cloth with flame retardant fibers.