Lifesaving air bag system for automobile falling into water and using method thereof

The invention relates to the technical field of automobile safety equipment, in particular to an automobile drowning lifesaving airbag system which comprises an automobile body and four lifesaving mechanisms mounted on the automobile body, and the lifesaving mechanisms are mounted on the two sides of an automobile head of the automobile body and the two sides of an automobile tail of the automobile body respectively; the lifesaving mechanism comprises an inflation assembly and a lifesaving air bag. The inflation assembly comprises an outer shell, an inner shell, an electric detonator, gunpowder and a gas generating agent. An ignition mechanism is installed in the automobile body and comprises an ignition button, a gravity sensor and a calculation chip which are electrically connected with one another, and through the design of the lifesaving air bag, the automobile can float after falling into water. The automobile lifesaving air bag is designed into a manual opening type, so that people in an automobile can flexibly open the lifesaving air bag according to the posture condition of an automobile body; a gravity sensor and a calculation chip are designed, so that the situation that the automobile body overturns on the water surface after the lifesaving air bag is opened, and the lifesaving effect is lost is effectively prevented.