People with hypertension who need to apply aminophylline must have clear signs. In case of acute asthma attack or severe heart failure, cardiogenic asthma, etc., theophylline can be applied appropriately. However, if people with hypertension take theophylline orally in their daily life, they must pay attention to monitoring heart rate as well as blood pressure. Since theophylline has the effect of increasing the heart rate, the increase in heart rate may moderately raise the blood pressure. For people with hypertension, if they are taking theophylline orally, they should clarify the signs and pay attention to the monitoring of heart rate. If the heart rate and blood pressure increase after the application of theophylline in hypertensive people, try to switch to other drugs, if the effect is not significant, you can also continue to apply aminophylline to prevent lung disease. In ordinary life hypertensive people should also pay attention to other drug choices, some drugs will improve the risk of blood pressure, heart rate, the application must pay attention to clear signs.