Dosophylline is not a hormone drug, belongs to the xanthine derivatives, this drug has the relaxation of bronchial smooth muscle, has a certain cardiotonic, diuretic, relieve bronchial spasm efficacy. Clinically, it can be used for bronchial asthma, wheezing chronic bronchitis, as well as other bronchial, airway spasm caused by dyspnea. Generally in the process of use, some patients will appear to have some adverse reactions, such as nausea, vomiting, abdominal pain, dizziness, insomnia, tachycardia, and even cause elevated blood glucose, proteinuria and so on. The concentration of the drug in the blood can usually be monitored when necessary to avoid these side effects. The use of this drug is usually prohibited for patients with acute myocardial infarction.