Risk factors for recurrence of early-stage renal cancer include serum calcium, neutrophils and other indicators over the upper limit of normal, hemoglobin lower than the lower limit of normal, and cardinal physical fitness lower than 80, more than 1 year between diagnosis and treatment, as well as smoking, alcoholism and so on. 1. Laboratory indicators: MSKCC and IMDC standards are often used for clinical judgment, including serum calcium, neutrophil and platelet levels greater than the upper limit of the normal index, hemoglobin lower than the lower limit of the normal index, and lactate dehydrogenase more than 1.5 times the upper limit of the normal index. 2. Cardiac fitness: the cardiac fitness status is less than 80%. 3. Time interval: the interval between diagnosis of kidney cancer and treatment is less than 1 year 4. Bad habits: Early kidney cancer recurrence risk factors are also related to bad habits, such as smoking, alcoholism, obesity and so on. All in all, early-stage kidney cancer patients need to actively cooperate with doctors in treatment, strengthen daily life management, and follow up regularly, so that doctors can observe the changes of their condition and reduce the chance of recurrence.