Atrial fibrillation has become one of the most common clinical arrhythmia diseases, and its harm can not only induce cardiomyopathy and heart failure, but more importantly, it can increase the risk of cerebral embolism in patients. What is the incidence of atrial fibrillation in China? How many atrial fibrillation patients are there in China? With the aging society in China, the number of patients with atrial fibrillation in China is increasing year by year. According to 2004 statistics, a survey in 10 different regions of China (4 urban and 6 rural areas) showed that the prevalence of atrial fibrillation was 0.42% in people aged 35-59 years and 1.83% in people aged ≥60 years, with an age-sex corrected prevalence of 0.77% (0.78% in men and 0.76% in women). According to the China Cardiovascular Disease Report 2017, there are more than 10 million patients with atrial fibrillation in China, and catheter ablation procedures for atrial fibrillation continued to grow rapidly between 2010 and 2016. Globally, 33.5 million people have atrial fibrillation, which is estimated to increase twofold by 2060 according. Atrial fibrillation will become a new epidemic, common disease. In addition, results of a survey in China using 470,000 residents in a 10 million person health insurance database showed a significant increase in the burden of atrial fibrillation and its associated stroke in China, with a 20-fold increase in the prevalence of atrial fibrillation and a 13-fold increase in atrial fibrillation-related stroke in the last 11 years. With the increased incidence of AF, there is a corresponding increase in AF-related complications, adding much burden to China’s medical care, which is characterized by a large population base, increasing aging and the coexistence of multiple diseases in the elderly, which is a particularly striking rate of increase in incidence in China. It is estimated that 1 in 5 Chinese adults is at risk of atrial fibrillation in their lifetime; and the prevalence of atrial fibrillation increases with age, with a 5-fold increase in the prevalence of atrial fibrillation among those aged 71-80 years compared to those aged 51-60 years, and a 6-fold increase in the prevalence of atrial fibrillation among the elderly aged 80 years or older. the risk of atrial fibrillation among the elderly aged 75 years or older is 2 times.