Underwater rescue system

An underwater rescue system, comprising:

• a submersible, and
• a rescue cage;
• wherein the submersible comprises a housing, a turntable and a motor;
• the turntable is rotatably arranged at an outer surface of the housing;
• the motor is fixed on the housing and is connected to the turntable;
• the rescue cage comprises a connecting rod, a first lifebuoy, a second lifebuoy and an air charging device, wherein a diameter of the first lifebuoy is greater than that of the second lifebuoy;
• a lower end of the connecting rod is provided with an electromagnetic chuck attracting the turntable;
• an upper end of the connecting rod is connected to the first lifebuoy;
• a bottom of the first lifebuoy is provided with a load-bearing net;
• a side of the first lifebuoy is connected to the second lifebuoy by a net bag;
• and the air charging device is in communication with the first lifebuoy and the second lifebuoy, and is configured to charge air to the first lifebuoy and the second lifebuoy.