Hemodialysis is an essential treatment for end-stage renal lesions, and its risks are as follows: 1. Patients develop dialysis imbalance syndrome during the initial dialysis, manifested as nausea, vomiting, headache and coma, but its onset can be reduced by gradually increasing the dialysis time method; 2. Patients develop cardiovascular and cerebrovascular complications, manifested as heart failure and cerebral hemorrhage; 3. Infections can occur if water treatment has heat sources or is not handled properly; 4. Very, very rarely, complications such as air embolism, muscle cramps and hemolysis may occur.