Atrial fibrillation is a relatively common persistent arrhythmia in which the heartbeat is fast and slow at times, with no regularity. Although the symptoms of atrial fibrillation are mild, they can be very harmful. Compared to the general population, the incidence of stroke is nearly five times greater in patients with atrial fibrillation. At present, atrial fibrillation has become the third cardiovascular disease after hypertension and coronary heart disease in terms of incidence. So, how can we prevent atrial fibrillation in our daily life? (1) Treatment of underlying diseases (1) Common causes of atrial fibrillation are: underlying heart diseases, such as coronary heart disease, hypertension, rheumatic heart disease, pulmonary heart disease, cardiomyopathy, myocarditis, congenital heart disease, etc.; endocrine diseases: atrial fibrillation, diabetes mellitus. (2) Actively treat the underlying diseases that may lead to atrial fibrillation. 2, maintain a good state of mind (1) psychoneurological factors, which are important factors leading to atrial fibrillation and very easy to ignore. (2) Managing emotions and stress is important for atrial fibrillation management. Stress and tension can exacerbate abnormal heartbeats making the heart more sensitive and may trigger atrial fibrillation. (3) To maintain a good state of mind, avoid violent mood swings, learn to control their emotions, peace of mind can reduce excessive heart rate fluctuations. 3, lifestyle attention (1) overweight and obesity is an independent risk factor for atrial fibrillation. It is estimated that if everyone reaches the ideal weight, 18% of atrial fibrillation cases can be prevented. (2) People who drink alcohol in excess for a long time also have an increased risk of atrial fibrillation than others. Therefore, it is important to stop drinking alcohol to prevent atrial fibrillation attacks. (3) The risk of atrial fibrillation in people who are smoking is twice that of non-smokers, and quitting smoking can reduce the risk of developing atrial fibrillation. (4) Limit or avoid long-term heavy consumption of caffeine-containing substances such as tea, coffee, cola, so try to quit alcohol, smoke less and avoid coffee and strong tea. (5) Try to avoid long-term use of over-the-counter drugs, caution in the application of certain drugs for the treatment of cough or cold, because these drugs may contain irritants, easy to promote irregular heart rhythm, should ask the doctor or carefully read the instructions before taking such drugs. (6) Because insomnia can easily induce atrial fibrillation, so there should be a reasonable cycle of work and rest habits, and it is best to have a regular sleep schedule. 4, regular annual physical examination Annual physical examination to do the electrocardiogram, blood sugar, thyroid function test. Early detection of possible underlying diseases. Therefore, maintaining a healthy lifestyle has a positive effect on the prevention and treatment effect of atrial fibrillation. As far as possible, we should avoid all kinds of stimuli, not to get too excited and keep emotionally stable; avoid drinking strong tea and coffee and limit alcohol consumption; exercise scientifically and reasonably to improve cardiopulmonary function; actively treat primary diseases, control blood pressure, blood lipids and blood sugar, etc., all of which can effectively prevent and actively treat atrial fibrillation.