Sinus tachycardia is a common cardiac arrhythmia that is treated according to different causes, both physiological and pathological. Physiological causes are common after strenuous exercise, heavy smoking, drinking alcohol, drinking coffee or staying up late, this situation causes tachycardia, as long as regular life and change bad habits, the symptoms will be relieved on their own and do not need to take drugs, if not improved by rest, you can take a small amount of beta-blockers, the symptoms can be relieved after the drug. If the pathological tachycardia is caused by bacterial or viral infections, you can choose appropriate antibiotics or antiviral drugs for treatment; if the sinus tachycardia is caused by anemia, you need to correct the anemia, you can take oral iron, and the heart rate will improve after correcting the anemia; if the tachycardia is caused by hyperthyroidism, you need to treat the primary disease, and the treatment effect is not good if you simply use drugs to lower the heart rate.