Dialysis, usually refers to hemodialysis, the principle of this treatment, is to drain the blood from the body and circulate it on the dialysis machine, while circulating it, to pass through the dialysis membrane and exchange it with the dialysis fluid, when the blood has circulated in this way for four hours, it has reached the purpose of purification and is sent back to the body. Hemodialysis is mainly for patients with uremia. When kidney failure develops to the stage of uremia, the kidneys have basically lost their ability to detoxify and drain water, and these toxins and water accumulate in the body, which has a serious impact on the body and is a very important cause of death for patients. It is necessary to use hemodialysis for treatment, and the principle of hemodialysis, which has been mentioned above, can maintain the basic stability of the body’s internal environment and obtain long-term survival. The removal of toxins by hemodialysis is not as adequate as one might think, and the vast majority of toxins remain in the body, causing damage to various organs and limiting the patient’s survival time.