Severe asthma refers to the patient’s attack with heavy symptoms, patient intolerance, serious clinical manifestations, repeated attacks, multiple attacks a day and can not be relieved, this first aid method is divided into two kinds, as follows: 1, family, personal first aid, when a loved one has a sudden onset of asthma, asthma patients, including family members to quickly determine whether to encounter allergens, such as perfume, smoking, etc., such as this situation, to assist patients to quickly leave, out of allergens and try to get to a ventilated, well-oxygenated area. Take out your own medicine to relieve asthma, called Ventolin, also known as salbutamol aerosol, for respiratory self-help treatment, which is severe asthma; 2. When asthma is very serious, family treatment methods are limited, and the most effective first aid method is to call 120 and quickly send the patient to the hospital, and there are relatively more first aid methods after arriving at the hospital respiratory and pulmonary wards, such as rapid nebulization and intravenous antispasmodic and wheezing treatment can be performed, along with Oxygen inhalation, non-invasive ventilation assisted treatment in more serious cases, etc. are all emergency methods for severe asthma.