“Airbag Lifebuoy” is design for the person who fall into the sea around breakwaters. Built-in an automatic inflation airbag with CO2 cylinder. When the lifebuoy was thrown into the sea, and the airbag was inflated instantly by CO2 cylinder. It can increase the area of the protection and buoyancy of life buoy. The user can crawl into the lifebuoy by any direction. The airbag lifebuoy can protect the user to prevent to crash tetrapods by big waves. It can improve chances of survival and avoid rescuers exposure to hazardous environments immediately.