A heart rate of 110 beats/min means that the heart is tachycardic, which may be a normal physiological response or may be caused by pathological factors. According to the criteria of the guidelines, the heart rate fluctuates between 60-100 beats/min at rest and the pacing point for issuing impulses is located in the sinus node, which is called sinus rhythm, and this heart rate is the normal heart rate of the human body. If the patient’s heart rate is more than 100 beats per minute, it is considered tachycardia, which is divided into sinus tachycardia and ectopic tachycardia depending on the source. 1. Sinus tachycardia: It may be caused by physiological factors, such as emotional excitement, tension, anxiety and activity, the body will reflexively make the heart rate increase, which is the regulatory response of the body’s normal neurological excitement, and when it returns to the normal After resting, the heart rate will return to the normal range and no treatment is needed. In addition, hyperthyroidism, anemia, fever, acute heart attack and other diseases can also lead to sinus tachycardia, intake of caffeine, anticholinergic drugs, etc., can also induce sinus tachycardia, after treatment of the relevant primary disease, sinus tachycardia will improve; 2, ectopic tachycardia: ectopic tachycardia is generally caused by pathological factors, the patient will suddenly feel palpitations and increased heart rate during the attack. Clinical diseases that can cause tachycardia are mainly divided into cardiogenic and non-cardiogenic diseases. Cardiogenic diseases include coronary heart disease, myocardial infarction, etc. Non-cardiogenic factors include pheochromocytoma, metabolic acidosis, etc. Patients need to be treated with appropriate medication and surgery, and the heart rate will generally return to normal after the primary disease is controlled. If the patient’s heart rate reaches 110 beats/min, he/she should take into account his/her state and go to the hospital if necessary to improve the electrocardiogram, cardiac ultrasound, blood tests, etc. to further clarify the heart condition and consider whether further examination as well as treatment is needed.