The principle of treatment of severe asthma, first of all, the most important point is to ensure life, because for asthma, the most fundamental basis of the pathology is the inflammatory response of the airway, so especially the principle of treatment of severe asthma is anti-inflammatory, which anti-inflammatory is the most important drug is hormone. Hormones include several aspects, including intravenous hormones, intravenous use, oral use, as well as nebulized use, inhalation use, the clinical principle is to be able to inhalation not oral, can be oral not infusion. However, for acute asthma attacks, it should be reversed, to control the asthma in the shortest possible time, which is the greatest protection for the patient. So for a severe asthma attack, the most important principle of treatment is to use hormones intravenously to control it in the shortest possible time. Then it will be combined with nebulized therapy to open up the airways, with anti-inflammatory therapy, and then with theophylline therapy, and even with oxygen, with postural therapy, and even with consideration of comorbidities. But the most important thing is the hormone treatment, intravenous use, nebulization use, but the use of a relatively short period of time, the principle of life assurance.