Aircraft seat backrest with lifesaving function

An aircraft seat backrest with a lifesaving function, comprising:

• a backrest body wherein a containing cavity is arranged in a front face of the backrest body;
• a quick release mechanism;
• a back plate assembly, wherein the back plate assembly comprises:
• a back plate covering the containing cavity, wherein the back plate is fixedly connected with the backrest body through the quick release mechanism in a separable manner;
• and
• a lifesaving parachute pack that is arranged on a back face of the back plate and contained in the containing cavity, wherein lifesaving straps of the lifesaving parachute pack pass through strap through holes in the back plate,
• wherein the back plate assembly further comprises a parachuting oxygen supply device that is installed below the lifesaving parachute pack on the back face of the back plate through supports and hoops, and is contained in the containing cavity during riding,
• wherein a hole for allowing a pipeline of the parachuting oxygen supply device and an on-off device of the pipeline of the parachuting oxygen supply device to pass and a hole for displaying and observing the pressure of the parachuting oxygen supply device are formed in the back plate.