Aminophylline is a compound salt of theophylline and ethylenediamine, and its pharmacological effect mainly comes from theophylline, and its water solubility is enhanced by ethylenediamine, which is mainly applied to alleviate the symptoms of wheezing such as bronchial asthma, wheezing bronchitis, obstructive emphysema, etc., and can also be used for asthma caused by cardiogenic pulmonary edema. Aminophylline includes three dosage forms: aminophylline tablets, aminophylline extended-release tablets and aminophylline injection. Its mechanism lies in the direct relaxation of bronchial smooth muscle, inhibiting the release of histamine and other allergic transmitters, relieving the congestion and edema of the bronchial mucosa, and it is one of the commonly used asthma-alleviating drugs. In addition to asthma, this product can also dilate the coronary artery and has a mild diuretic effect, cardiotonic effect and central excitatory effect. Adverse reactions such as nausea, vomiting and agitation may occur after the use of this product, and serious adverse reactions such as dizziness, palpitation, arrhythmia, or even a sudden drop in blood pressure or convulsions may be caused if the amount of intravenous injection or drip is too large. Allergic to the product and active peptic ulcer, uncontrolled convulsive disease patients are prohibited. If you need to use aminophylline, it is recommended to go to a regular hospital, according to their own conditions, under the guidance of the doctor, to avoid blind use of drugs to avoid adverse reactions.