There are usually three methods to open the airway in cardiopulmonary resuscitation (CPR): 1. Tilt the head and lift the chin method, usually the operator presses on the patient’s forehead with one hand at the place of the small fishbowl and presses downward forcefully at the same time, and then lifts the patient’s jawbone below so that the chin is raised upwards, which helps to open the airway, and it is one of the most commonly used methods; 2. The nature of the same method with the aforementioned method is called the tilt the head and lift the neck method. Lifting the neck method. The operator also uses one hand to press on the patient’s forehead, and then the other hand to lift the patient’s neck upward, so that the head can be tilted backward to open the airway. 3, two-handed lifting of the jaw method, are applied to suspected or diagnosed cervical spine injury in the patient, can not let the patient’s neck movement, so only can use this method. Generally, the operator grasps the patient’s lower jaw with both hands from both sides and lifts it up, so that the head is tilted back and the lower jaw can be moved forward, and the airway can be opened at the same time.