Atrial fibrillation in hemodialysis is a more common complication in the process of dialysis, and the reasons include the following: 1, it has a relationship with the structure and function of the patient’s own heart, for example, due to the long-term water and sodium load retention in dialysis patients, resulting in heart enlargement and abnormal heart structure, which can appear atrial fibrillation; 2, hypokalemia occurs after hemodialysis, and the low potassium can also induce paroxysmal atrial fibrillation; 3, the patient himself/herself The existence of coronary heart disease or ischemic cardiomyopathy, etc., can appear atrial fibrillation. If it is caused by low potassium, the patient’s atrial fibrillation can be improved by correcting low potassium and improving the patient’s electrolyte disorder. At the same time, these patients should be careful to control their weight between dialysis sessions to avoid excessive water loading, which may improve the patient’s cardiac function. In addition, medications can be applied under the guidance of a cardiologist for treatment.