Aminophylline tablets its function is to relax the smooth muscle, etc., commonly used in the treatment of bronchial asthma, wheezing bronchitis, obstructive pulmonary emphysema and so on. Aminophylline tablets can directly relax the bronchial smooth muscle, inhibit the release of histamine and other allergic transmitters, relieve the congestion and edema of the bronchial mucosa; increase the contraction force of isolated skeletal muscle, and improve the diaphragm contraction force in the case of chronic obstructive pulmonary disease. Aminophylline tablets are one of the most commonly used clinical asthma-alleviating drugs. In addition to asthma, this product can relax the smooth muscle of the biliary tract, dilate the coronary arteries and has a mild diuretic effect, cardiotonic effect and central excitatory effect. The use of this product may appear after the lack of appetite, nausea, vomiting, gastrointestinal bleeding; can also be seen headache, irritability, agitation, the need to stop the drug clinic observation. This product is contraindicated in patients with acute myocardial infarction, severe coronary atherosclerosis and hypotension. Hypertension, pulmonary heart disease, severe hypoxemia patients with caution. Use with caution in patients with hepatic and renal insufficiency. Use with caution in patients with active peptic ulcer or history of ulcer. It is recommended to go to a regular hospital and consult a doctor to avoid blind use of medication.