Integrating with the design of automatic water mist fire extinguishing system or used individually. Its height is up to 20-25 meters. It can replace fire resisting shutter, fire doors and division of water curtain. It will exert influence neither on the movement of equipment, personnels and materials, nor on fire separation as well as the spreading of toxic smokes. It is able to degrade smoke and temperature quickly while providing high pressure water mist with open sprays in a large scale, that eliminate harm of high temperature and smoke.