Patients are placed on a ventilator and can survive if the primary disease or respiratory failure is corrected and improves. A ventilator can help ventilate a patient when the patient is in respiratory failure for a variety of reasons. When a patient has difficulty breathing, a ventilator can allow ventilation to improve, which can rest the lungs of a patient who is in the active phase of the disease and reduce the work done by the respiratory muscles. There are certain indications for the use of a ventilator, and the doctor will determine whether a ventilator is needed based on the patient’s condition. At the same time, the cause of respiratory failure for treatment, the treatment process doctors will also monitor the patient’s indicators at any time, the relevant indicators improve, that is, can stop using the ventilator. The use of a ventilator by a patient means that the doctor has judged that the patient has respiratory failure according to the patient’s condition and needs to use a ventilator, and it does not mean that life is over, so it should be viewed correctly.