For early stage renal cancer, if it is cleanly resected, no other adjuvant treatment is usually needed after surgery. Renal cancer mainly refers to primary renal cancer, most of which are clear cell carcinoma of the kidney. Early-stage renal cancer refers to confined renal cancer, i.e. T1-T2N0M0 stage renal cancer (I-II) in TNM staging. At this time, renal tumors are usually confined to kidneys without metastasis, and the prognosis can be better after treatment. For limited renal cancer, surgical resection is mostly used for treatment, such as partial nephrectomy, radical nephrectomy, etc., which can often remove the lesion completely; renal clear cell carcinoma is not sensitive to chemotherapy, etc., and adjuvant chemotherapy is usually not recommended; in addition, early stage renal cancer has a better prognosis, and some studies claim that the 5-year survival rate after surgery can usually reach more than 70%. However, for locally progressive renal cancer, postoperative adjuvant therapy such as targeted therapy may be needed. Whether kidney cancer needs treatment after surgery is mainly determined by the stage of kidney cancer, whether the tumor has metastasis or not, patient’s symptoms, recurrence rate and other factors. It is recommended to go to regular hospitals to evaluate the condition and follow the doctor’s instruction to avoid delaying the condition, and to follow the doctor’s instruction to have regular checkups after surgery.