Hemodialysis usually takes about 4 hours once, 2 to 3 times a week; if edema, heart failure and other symptoms are severe, it may be necessary to appropriately increase the dialysis time or the number of dialysis sessions according to the condition. Patients on hemodialysis, according to their blood creatinine level, ultrafiltration amount, blood pressure, etc., usually dialyze 2 to 3 times a week, about 4 hours each time; if in the process of regular dialysis, serious edema, chest tightness, shortness of breath and other symptoms of heart failure, it may be necessary to appropriately increase the time of hemodialysis or the number of times of dialysis according to the patient’s condition. For patients who need hemodialysis treatment, it is recommended to go to regular hospitals in time and standardize the treatment under the guidance of doctors.