Pulmonary ventilation refers to the amount of gas entering and leaving the lungs per unit time, and generally refers to the dynamic air volume of the lungs, reflecting the ventilation function of the lungs. Pulmonary ventilation can be divided into minute ventilation, maximum ventilation, ineffective lung volume and alveolar ventilation. The minute ventilation refers to the volume of air inhaled or exhaled per minute, which is the product of tidal volume and respiratory rate. It is often seen in clinical practice that some patients with shallow breathing may have insufficient ventilation or hypoxia. When resuscitating a patient with sudden respiratory arrest, artificial respiration is used to keep the lungs ventilated by expanding or reducing the patient’s chest. However, care should be taken not to exert too much force to prevent damage to the ribs, but also to pay attention to the magnitude so that alveolar ventilation achieves sufficient effect.