Dialysis, as a form of renal replacement therapy, is mainly used for patients in the uremic stage of chronic renal failure to help them live longer. In addition, dialysis is also used for patients who are poisoned by drug overdose, or who have severe internal environmental disorders. Although dialysis has many benefits, it can also be harmful to the body. Patients on dialysis may suffer from hypotension or hypertension. Hypotension occurs mainly because the blood is drawn out of the body after dialysis, resulting in a decrease in effective circulating blood volume and instability of blood circulation causing hypotension, while hypertension is often due to the fact that dialysis removes antihypertensive drugs from the body. In addition, dialysis also induces heart disease and dialysis-related amyloidosis, which may eventually lead to serious complications.