Abstract: A life jacket structure includes a life jacket body, at least one set of hanging devices, a blowing tube and an inflation starting device. An inflatable airbag is sewed onto an internal side of the body, and the body further includes at least one pair of strap holes disposed on corresponding position on both sides. Both ends of the hanging device are connected onto the corresponding strap holes of the life jacket. The blowing tube is installed at an appropriate position of the life jacket body and penetrated through the life jacket into the inflatable airbag. The inflation starting device is installed on the life jacket and disposed on the same side of the blowing tube, and further includes an inflation cylinder and a starting mechanism. The starting mechanism is provided for receiving a start signal to start inflating the life jacket by the inflation cylinder.