The first aid method for respiratory arrest is to immediately undress the patient, then let the patient lie flat in a supine position, pay attention to put the patient on a hard flat bed, let the patient’s head tilt back as much as possible, and then help clean the patient’s airway secretions. Immediately perform mouth-to-mouth artificial respiration and chest cardiac compressions, the general number of chest cardiac compressions is 100-120 times per minute, paying attention to the pressure tract should be moderate. The method of mouth-to-mouth artificial respiration is to place the patient on his back, hold the patient’s jaw up with one hand, and let the patient’s head tilt back so as to release the airway obstruction and keep the patient’s airway open. The caregiver takes a deep breath and then blows into the patient’s mouth until the patient’s chest is slightly inflated. The caregiver turns the head slightly sideways and quickly relaxes the hand pinching the nostril so that the patient can breathe on his or her own, repeatedly.