Uremic dialysis is divided into two kinds of hemodialysis and peritoneal dialysis. Overall, dialysis can prolong the life of uremic patients, but it also has certain hazards. The bad effects of hemodialysis mainly include: 1. In the process of just starting dialysis, patients are prone to dialysis imbalance syndrome and first use syndrome. Dialysis imbalance syndrome is that patients may experience nausea and vomiting, headache, and in severe cases, epilepsy and coma when dialysis is first started. First use syndrome is that patients may have allergy to the dialyzer, and severe allergy may lead to death.2. The process of dialysis has a greater impact on the patient’s cardiovascular system, and arrhythmia, hypertension, hypotension, and heart failure may occur.3. Patients on hemodialysis need to be treated with anticoagulants, so the risk of bleeding may be higher in patients on hemodialysis, and they may be prone to Gastrointestinal bleeding, cerebral hemorrhage, etc. 4. Patients on dialysis may be prone to catheter infection as well as internal fistula infection. Patients on peritoneal dialysis may develop peritoneal dialysis-associated peritonitis during the dialysis process because they operate at home on their own. Also, because the peritoneal dialysis fluid contains sugar, it may be difficult for diabetic patients to control their blood sugar if they do peritoneal dialysis.