Sinus tachycardia can be caused by a variety of reasons, physiological and pathological changes can occur, according to the condition of the choice of temporary observation, drug treatment, surgical treatment. 1. Temporary observation: exercise, emotional excitement can lead to sympathetic excitation, sinus tachycardia, this is a normal physiological changes, generally no treatment, can be restored after rest. 2. Drug treatment: (1) cardiovascular disease: sinus tachycardia can be controlled by beta-blockers such as metoprolol; acute heart failure causes insufficient ejection of blood from the heart, the heart rate is compensated for the increase in heart rate, generally need to address the cause of the disease, symptomatic treatment, including the use of torasemide, spironolactone diuretics, recombinant natriuretic peptide dilation of coronary arteries, etc., to reduce the cardiac load and thus slow down the heart rate. (2) Hyperthyroidism: the heart rate is accelerated due to excessive secretion of thyroid hormones, which can be treated with antithyroid drugs such as methimazole and propylthiouracil. (3) systemic factors: fever, anemia, need to clarify the specific causes, if infectious fever, follow the doctor’s instructions to use penicillin, cephalosporins anti-infective treatment, anemia need to follow the doctor’s instructions to oral ferrous sulfate tablets and other drugs to correct anemia. 3. Surgical treatment: acute myocardial infarction will cause compensatory increase in heart rate, generally as soon as possible to open the blood vessels for cardiac stent implantation. If the patient appears sinus tachycardia, should go to the hospital cardiology department, identify the cause of the disease, follow the doctor’s instructions for treatment.