Dialysis machine is a machine that can purify the blood. When the kidneys are completely useless, the name of dialysis is to purify the blood in a scientific way. In this case the help of dialysis machine is taken. For this, blood is passed from the arteries of the human hand through the tube through the dialysis machine. Here urea , uric acid and other harmful substances are excreted from the blood and the purified blood re-enters the body through the veins of the patient.