Aminophylline should not be taken for a long time. Aminophylline has the effect of dilating bronchial smooth muscle and relieving patients’ shortness of breath and chest tightness. It is important to note that long-term use of aminophylline may increase the adverse effects of the drug, as follows: 1, systemic reactions: the user will experience nausea, stomach discomfort, vomiting, loss of appetite, etc., and some patients may also experience headache, irritability, muscle tremors and agitation, etc. 2, cardiovascular system reactions: long-term use of aminophylline can easily lead to the poisoning of this product, inducing patients with arrhythmias, increased heart rate, epilepsy, serious patients can also cause respiratory arrest. 3, digestive system reactions: sometimes patients can have gastrointestinal bleeding and other reactions due to the stimulation of the gastrointestinal tract when taking aminophylline for a long time. Therefore, aminophylline is a short course of palliative medication, and it should be discontinued in time after the clinical symptoms are relieved, and attention should be paid to its usage, dosage and adverse reactions when taking aminophylline.