Congenital single-kidney babies are usually not difficult to raise, and with normal kidney function, having only one kidney does not have much effect on the child’s growth and development. Congenital single kidney babies are usually caused by chromosomal abnormality during pregnancy. The reserve function of human kidney is very powerful, as long as the kidney function is normal usually one kidney can load the normal metabolism of human body. A single kidney does not affect the child’s growth and development and life too much, so congenital single kidney babies are usually not difficult to raise. In order to reduce the burden on the kidneys, babies with congenital mononephrosis should pay attention to consuming less high protein food and avoiding drugs that are harmful to the kidneys when taking medication. If a baby with congenital mononephrosis is not feeling well, he or she should go to the hospital in time and follow the doctor’s advice in order to have a better treatment of the disease.