There are many infusion prescriptions for allergic asthma, usually glucocorticoids or theophylline-based injections. At present, this disease can not be cured to prevent the main, when the patient has a severe or severe asthma attacks can only use intravenous prescription infusion treatment. 1. Glucocorticoid: it is the most effective drug to control asthma attack, such as methylprednisolone or hydrocortisone succinate intravenous drip, with anti-allergic, anti-inflammatory and antiviral effects; the side effects are nausea, abdominal pain, irritability and anxiety, etc.; peptic ulcers and hypertension, etc.; allergy, mycobacterial infections, and severe mental disorders, etc. are prohibited. 2. Theophylline: such as wheezing injection for severe and critical asthma patients, with antispasmodic and asthma; side effects of nausea, vomiting, panic, sleep disorders, etc.; cardiac arrhythmia and hypertension patients, such as caution; allergy, active gastric ulcers and patients with convulsions are prohibited. If you feel unwell, we recommend that patients go to the respiratory department of the regular hospital, not blindly self-treatment to avoid delays.