Abstract: Coal mine's gas explosion has the characteristics of sudden happening and severe damage, which is one of the major coal mine's accidents in China, the current technology of suppression and isolation on gas explosion needs urgent development and improvement. Depend on a large number of comparative study, we introduce three new technologies which have unique superiority for suppression and isolation on gas explosion. HS system technology which is characterized by high speed start, the initiative explosion suppression, explosion control in the start-up phase; nanometer materials taking advantages of nanometer materials' properties to highly improve the efficiency of explosion suppression; porous materials can decay the shock wave and extinguish the flame of gas explosion. We elaborate their operational principle and research progress, analyze their advantages and disadvantages, and summarize their possible direction of development, which provides new thought for the development of suppression and isolation on gas explosion.