During clinic visits, many patients with premature beats ask the same question: “Why do I have premature beats? What causes my premature beats? I know the cause so that I can cooperate with the doctor for better treatment.” Normal people sometimes have premature beats, which occur when they are tired, excited or poorly rested, and it is common to have several to hundreds of beats per day. 1, high work pressure, staying up late, emotional excitement, excessive fatigue: these common subhealth factors in modern life can also cause premature beats to occur, and long-term fatigue and staying up late can lead to organic heart disease. 2, excessive smoking, drinking alcohol or strong tea or coffee, these drinks contain sympathetic excitatory substances: long-term high concentration of references can also lead to the occurrence of premature beats and tachycardia. 3. Drug effects: Anti-arrhythmic drugs such as digitalis, drugs for neurological and psychiatric diseases can cause premature beats, so recalling whether there was any experience of taking drugs before the onset of the disease can clarify the diagnosis. Electrolyte disorders: Electrolyte disorders such as potassium and magnesium are common causes of arrhythmias. In summer, sweating, diarrhea and vomiting can cause electrolyte disorders in the body, which can lead to arrhythmias such as premature beats, so once these conditions occur, the electrolytes needed in the body should be replenished in time. 5, other organ lesions: the most common is hyperthyroidism, patients with hyperthyroidism or hypothyroidism often have arrhythmias and premature beats, often accompanied by symptoms of hyperthyroidism such as panic, hand tremors, weight loss, insomnia, etc. 6. Organic heart disease: The purpose of the examination in the hospital is to find out whether there is organic heart disease. These diseases include: (1) viral myocarditis; (2) various types of cardiomyopathy; (3) coronary artery disease; (4) valvular disease; (5) congenital heart disease; (6) after heart surgery or cardiac catheterization. All of these organic heart diseases have strict diagnostic criteria, and the doctor will do the appropriate tests to determine if there is an organic heart disease. If the premature beats are indeed caused by these heart diseases, the premature beats will improve while treating the original disease; if these organic heart diseases are not found after careful examination, then the premature beats may be due to the causes mentioned earlier. Regardless of which factor causes premature beats, there will be a significant decrease for a period of time and an increase after a period of time, which is one of the characteristics of premature beats. You can visit the hospital frequently for follow-up visits to find out the pattern of premature beats, which is good for the choice of treatment.