The ways to prevent recurrence of kidney cancer by removing one kidney are regular checkup, keeping away from risk factors and maintaining good living habits. 1. Regular rechecking: It is very important to follow the doctor’s instruction for regular rechecking to find out the recurrence in time. Usually, 1~3 years after the surgery, every 3~6 months; if the condition is good, after 3 years, every 1 year. 2. Keep away from risk factors: quit smoking in daily life, maintain a healthy weight, control blood pressure, avoid exposure to harmful substances such as cadmium and organic solvents, and use drugs correctly to avoid kidney damage. 3. Maintain good living habits: exercise properly, eat a proper amount of fresh vegetables and fruits every day, and keep an optimistic mindset. If renal cell carcinoma is suspected, it is recommended to go to regular hospitals to evaluate the condition, follow the doctor’s instructions to cooperate with the treatment, and follow the doctor’s instructions to have regular review after the treatment, so as to avoid delaying the condition.