The difference between 3 hours and 4 hours of dialysis dialysis time and adaptable people. Dialysis, i.e. hemodialysis, is mainly used for the treatment of uremia and other diseases, replacing the function of kidneys through hemodialysis to eliminate excess water, toxins and metabolic wastes from the body. Under normal circumstances, the duration of a dialysis session is about 4 hours, and too short a time may affect the effect of dialysis. However, if the patient’s tolerance level is poor, the duration of hemodialysis can be shortened to about 3 hours. If the patient is a person with low metabolic constitution and the serum creatinine and urea nitrogen levels in the body are not high, the hemodialysis time can be controlled to 3 hours. If hemodialysis is needed, it is recommended that patients go to the local regular hospitals, according to the individual situation, with the doctor to develop an appropriate treatment plan. Keep a good mood during treatment and avoid excessive stress.