If only one kidney is available and that kidney is functioning normally, it will not usually affect the patient’s life expectancy. For people with congenital independent kidney or kidney transplant donor with only one kidney, if the remaining kidney functions normally, the remaining one kidney will increase in size compensatively due to the compensatory function of the kidney, and the kidney function can be enhanced to meet the physiological needs of the body and remove the excess water and toxins from the body. People who have only one side of the kidney should try to keep the remaining kidney in a relatively healthy state, if the remaining side of the kidney has problems, kidney function can be affected. Therefore, try not to eat overnight or rotten food, be careful with nephrotoxic drugs, avoid bad habits that damage the kidneys such as staying up late, overeating and strenuous exercise, prevent infections, and drink more water in general. If diabetes, hypertension, etc. occur, they must be treated actively. Those who have only one kidney should pay attention to the amount of urine, and at the same time, they should exercise properly, enhance physical fitness and prevent cold. Once kidney function damage is found, that is, you should actively receive Chinese medicine to protect kidney function.