The elderly do not suffer from dialysis. Dialysis is mainly for patients with uremia. The general public has some misconceptions about dialysis and thinks that it is very painful. Dialysis is the process of diverting blood from the body to a dialysis machine for detoxification and drainage, and then sending the purified blood back to the body to remove excess water and toxins from the body. At the beginning of dialysis, needles are inserted into the arm, which can cause painful sensations. During the process of dialysis, the patient does not experience any discomfort, so dialysis is not painful. On the contrary, the process of dialysis will drain the excess water out of the body, then the patient’s edema and chest tightness and breath-holding symptoms of heart failure will be relieved; while the toxins will be discharged from the body, the patient’s appetite will turn better and the nausea and vomiting symptoms will disappear. From these two points of view, patients will feel comfortable after dialysis.