After removing one kidney, if the other kidney is healthy, it generally will not affect life expectancy. The physiological impact of removing one kidney can almost be disregarded. As long as the other kidney retained is healthy and care is taken to protect it in the future, it generally will not affect the patient’s life expectancy too much. However, with one kidney undertaking the work of two kidneys, the load of a single kidney will be increased, and the possibility of various kidney diseases will be increased, so it is necessary to protect this one kidney; early kidney diseases can have no symptoms, and may only be found through blood sampling and urinalysis; if renal failure occurs, it may be life-threatening; there are some people who were born with only one kidney, and have not suffered from kidney diseases. In normal life, pay attention to protect the kidneys, drink more water, rest more, avoid exertion, try to avoid the use of drugs with nephrotoxicity, and if you have any symptoms of physical discomfort, you should go to the hospital in time and consult the physician’s guidance.