With the development of our society and the aging society, the incidence of cardiovascular diseases in China has been increasing year by year, especially for patients with hypertension and atrial fibrillation. Hypertension and atrial fibrillation will become a new epidemic and common disease. According to the latest statistics, the prevalence of hypertension among Chinese residents aged ≥18 years was 25.2% in 2012, and the number of hypertensive patients in China was 270 million; the prevalence rate was higher in urban than in rural areas (26.8% vs. 23.5%), and higher among men than among women, and increased significantly with age. China has more than 10 million patients with atrial fibrillation, and catheter ablation procedures continued to grow rapidly from 2010 to 2016, with an annual growth rate of 13.2% to 17.5%. The global prevalence of atrial fibrillation is 33.5 million, and is estimated to increase twofold by 2060 according to. Many say that high blood pressure and atrial fibrillation are not directly related to each other, but in fact, high blood pressure and atrial fibrillation are closely linked. According to the newly published “Atrial Fibrillation:Current Recognition and Recommendations for Treatment-2018”, hypertension is the most important risk factor for patients with atrial fibrillation. Hypertension is strongly associated with the development of atrial fibrillation, and the risk of atrial fibrillation in hypertensive patients will be significantly increased if blood pressure is not well controlled in the clinic. Studies have shown that even when blood pressure is at the upper limit of normal, the risk of atrial fibrillation is similarly increased. The mechanism may be that prolonged hypertension leads to increased left atrial pressure, atrial fibrosis and inflammatory cell infiltration, which in turn induces the development of atrial fibrillation. Hypertension also predicts the risk of recurrence after catheter ablation, but there is insufficient evidence that aggressive blood pressure control improves ablation success. Hypertension and stroke are closely related, and active and effective control of blood pressure is of great clinical significance. In terms of the choice of different types of antihypertensive drugs, angiotensin-converting enzyme inhibitors (priligy) and angiotensin receptor blockers (sartans) may be beneficial in reducing the incidence of atrial fibrillation, and priligy and sartan antihypertensive drugs may reduce the risk of recurrence of atrial fibrillation in patients with decreased left ventricular ejection fraction or left ventricular hypertrophy. Therefore, for hypertensive patients, active control of blood pressure may not only reduce the risk of coronary heart disease and heart failure, but also reduce the incidence of atrial fibrillation.