This smart fire extinguisher is more intelligent than a common one, and it is mainly used to put out the fire at home efficiently. It can be used for personal fire - fighting as a traditional fire extinguisher, furthermore, when there is nobody at home but fire happens, it can automatically put out fire like a firefighter until it controls the fire situation. This compact smart fire extinguisher has an infrared thermometer for sensing the flame, as well as a powder container, a collision sensor which can avoid obstacles and a base that can roll. It can detect smoke, move toward the direction of the fire and spray foam to the center position of the fire to play an automatic role in fire - fighting.