Asthma is a chronic airway inflammation that clinically manifests as episodes of wheezing, chest tightness, and shortness of breath. Variant asthma manifests as cough and chest tightness, with more attacks at night and early morning, which should be related to the increased vagal tone during night sleep. Details are as follows: 1. If a patient has a sudden acute attack of asthma at night, the first thing you should do is open the window and ventilate, you should not let the patient blow right into the window, otherwise it will cause respiratory infection, just open the window to keep the air circulating. Do not surround, leave 1-2 people to take care of, if surrounded will also cause air circulation; 2, let the patient keep a relaxed mood, sedation, put all the energy on breathing, to deep and slow breathing, do not over-stress, over-stress rather affect breathing; 3, inhalation bronchodilators as soon as possible, choose short-acting and fast-acting inhalation drugs, such as salbutamol, love all, or inhalation glucocorticoids. There are single drugs and compound preparations can be used to achieve rapid relief process, if the patient can be quickly relieved after the treatment of western drugs, treatment at home can be; 4, if the inhalation of drugs patients appear to aggravate the symptoms, wheezing symptoms aggravated, blurred state of consciousness, acute respiratory distress, you must call 120 as soon as possible to the emergency department or respiratory medicine consultation.