Single person simple airbag CPR operation has open airway, airbag mask ventilation. 1. Open the airway: place the patient in a supine position, first tilt the head to one side, clean the mouth of vomit, denture, mucus, etc.. Return the patient’s head to the right position and open the airway by tilting the head and lifting the jaw. If there is no neck injury, fill a towel or pillow under the neck to tilt the patient’s head back. 2. Airbag mask ventilation: the first aiders are located at the top of the patient’s head, one hand presses around the mask to ensure that there is no air leakage, and the other hand presses the skin bag for ventilation. Pressure time is greater than 1 second, and carefully observe whether there is any chest rise and fall. Simple airbag CPR performed by a single person is prone to insufficient ventilation, mainly due to the mask compression is not tight easy to leak, one-handed compression of the airbag skin bag compression is limited, pay close attention to the patient’s vital signs changes.