Tachycardia occurs when an adult’s heart rate reaches 102 beats per minute in a quiet state. This type of tachycardia needs to be treated, but rather than just using medications to aggressively control the heart rate, the main goal of tachycardia treatment is to find the cause of the increase in heart rate and to aggressively treat the primary disease. If the tachycardia is caused by heart failure, it is necessary to actively control the heart failure, give the drugs to reduce the symptoms of heart failure as well as inhibit myocardial remodeling, improve the prognosis of heart failure, but also to actively treat the causes of heart failure, control the triggers of heart failure. If the increase in heart rate is caused by hyperthyroidism, drugs to treat hyperthyroidism should be actively given, and drugs to slow down the heart rate, such as β-receptor antagonists, should also be given. If the increase in heart rate is caused by anemia, the cause of the anemia should be actively treated and the anemia should be actively corrected.