There are invasive ventilators and non-invasive ventilators. Invasive ventilators require a tracheal tube to be inserted into the patient’s airway, possibly through the mouth, called a transoral tracheal tube, or through the nose, inserted into the tracheal tube through the nasal cavity, or a long-term indwelling tube, which may require a tracheotomy, a tracheotomy in the larynx, and an indwelling tracheal tube, and the patient is connected in this way, called an invasive ventilator. If the patient is clear and has general asthma and needs to pass the acute phase, a non-invasive ventilator can be used, which is connected to the mouth and nose through a mask. Once the non-invasive approach is not compatible and the human-machine coordination is not achieved, the patient should be switched to the invasive approach, and the patient should be sedated with certain sedative drugs to help him achieve the human-machine coordination.