Bronchial asthma oxygen is administered in the same way as other chronic respiratory systems. Clinically, oxygen is administered mainly by nasal cannula, mask oxygen and simple respirator. Nasal catheter oxygen is more commonly used for patients with chronic obstructive pulmonary disease or asthma. Since the lungs of patients with this disease are in a state of hyperinflation, i.e., the gas is overinflated in the airway and may be combined with carbon dioxide retention, if the patient is given oxygen by mask, the condition may be further aggravated. It is beneficial.