Generally speaking, renal dialysis patients can have arteriovenous endovascular fistula many times, and as long as proper care is taken, only one arteriovenous endovascular fistula can be used for a long time. Kidney dialysis patients need to do arteriovenous endovascular fistula surgery before dialysis, after the endovascular fistula is mature, as a vascular access for hemodialysis treatment, it is the “lifeline” for hemodialysis patients, but after arteriovenous endovascular fistula surgery, endothelial hyperplasia, thrombosis, infection, aneurysm and other complications, resulting in vascular blockage and affecting the flow of the fistula. The flow rate of the endovascular fistula is affected, and dialysis cannot be performed effectively and adequately. If a blockage of an arteriovenous endovascular fistula occurs, it is important to take active remedial measures. Endothelial hyperplasia or thrombosis can be catheterized and percutaneous transluminal angioplasty can be used; infection prevention is important, usually after the endovascular fistula surgery, antibiotics are routinely used to prevent infection, if necessary; and aneurysm formation is usually surgically removed. If the fistula is properly cared for, it can be used for a lifetime. It is recommended that dialysis patients go to a regular hospital to be evaluated for arteriovenous endovascular fistulas under the guidance of medical staff.