Sinus tachycardia is a relatively common cardiac arrhythmia. Most sinus tachycardia occurs in normal people without organic heart disease, such as emotional stress, excitement, exertion or drinking alcohol or coffee, etc. Sinus tachycardia is generally not treated with medication. Self-adjustment, keep your mood relaxed, rest for a while, avoid stress and strain, the heart rate will slow down. Sinus tachycardia may also occur in some cases of disease, such as anemia, hyperthyroidism, fever, etc. In this case, only the primary disease should be treated, such as hyperthyroidism, with antithyroid drugs. For anemia, correct the anemia. For fever, use antibacterial agents to control the infection. Once the primary disease is cured, the tachycardia will return to normal.