Hypoxemia can be improved by the use of a ventilator, but not all cases of hypoxemia need to be treated with a ventilator. Ventilator is an effective means of artificially replacing the body’s voluntary ventilation function, and it is mainly used in emergency procedures, including respiratory failure due to various causes, anesthesia respiratory management during major surgeries, as well as respiratory support therapy and emergency resuscitation. According to the type of use, it can be divided into two types: controlled mechanical ventilation and assisted mechanical ventilation. Hypoxemia refers to a decrease in the oxygen content of the human blood, which can be characterized by a decrease in the partial pressure of blood oxygen and oxygen saturation. In persistent hypoxemia, ventilator-assisted ventilation therapy may be given to help correct hypoxemia rapidly. In mild cases of hypoxemia, hypoxemia can be corrected by nasal cannula or mask oxygenation. Ventilator therapy is a life-supporting means of providing oxygen therapy to patients with severe or intractable hypoxemia, and the supply of timely and appropriate amounts of oxygen can help to improve the survival rate of the patient and provide a great deal of scope for resuscitation. Therefore, the use of ventilator for hypoxemia is effective. However, there are contraindications to the use of ventilators, so please follow your doctor’s instructions for specific treatment options.