The occurrence of atrial fibrillation in hemodialysis is a more common complication of the dialysis process, and the causes include the following: 1. It is related to the structure and function of the patient’s own heart, for example, due to long-term water and sodium load retention in dialysis patients, resulting in heart enlargement and abnormal heart structure, atrial fibrillation can occur at this time; 2. Hypokalemia occurs after hemodialysis, and low blood potassium can also induce paroxysmal atrial fibrillation; 3. The patient himself The presence of coronary artery disease or ischemic cardiomyopathy, etc., can cause atrial fibrillation. If it is caused by low potassium, atrial fibrillation can be improved by correcting the low potassium and improving the patient’s electrolyte disorder. Also, such patients should be careful to control their weight during the interdialysis period to avoid excessive water load, which may improve the patient’s cardiac function. In addition, medication can be applied under the guidance of a cardiologist.