Dialysis is mainly performed for patients with uremia. Dialysis is absolutely good for patients with uremia because it can remove toxins and excess water from the body and can maintain the stability of the body’s internal environment. Without dialysis, patients will die due to severe heart failure, cerebral edema or severe electrolyte disorders. Of course, dialysis has its disadvantages compared to normal kidney detoxification. For example, the removal of toxins by dialysis is not very adequate, and the toxins removed each time are only 1/4 of those removed by normal kidneys, so the vast majority of toxins are still in the body, causing invisible damage to various organs, which will limit the survival time of patients. But overall, hemodialysis is still the most important treatment for UTI, and the emergence of hemodialysis is a milestone treatment for patients with UTI. Before the advent of hemodialysis, the mortality rate of patients with uremia was very high, and after the advent of hemodialysis, the mortality rate of patients with uremia dropped dramatically.