Underwater safe self-saving device

The invention relates to an underwater safe self-saving device. The underwater safe self-saving device comprises a front airbag, a rear airbag and a compressed gas container, wherein the compressed gas container is used for supplying air to the front airbag and the rear airbag and is provided with a switch; airbag connecting pipes and connecting belts are arranged at the two sides of the front airbag and the rear airbag, the airbag connecting pipes are used for communicating the front airbag with the rear airbag, and the connecting belts are used for connecting the front airbag with the rear airbag. When the underwater safe self-saving device is used, firstly the compressed air is injected into the compressed air container, then the underwater safe self-saving device is worn by a user, the switch of the compressed gas container can be switched on when the user is in danger in water, the compressed gas can be rapidly filled into the front airbag and the rear air bag, and then the front airbag and the rear airbag full of the compressed air can generate large buoyancy forces to serve as a lift ring to gain a survival chance, so that the underwater safe self-saving device has the characteristics of simplicity in operation and good safety performance.