Renal cell carcinoma is about 3% among all malignant tumors in Taiwan. Because the symptoms are not obvious during the early stage, but usually found at the late stage, and thus encounter the dilemma of no drugs available. Formerly, the treatment preferred using the immunotherapy. However, recently the treatment is inclined to use the molecular target therapy for late-stage renal cell carcinoma Everolimus, a mammalian target of rapamycin (mTOR) protein inhibitor, which further inhibit tumor cell growth and differentiation of angiogenesis, is the first choice. For the patients with hepatic function impairment, dosage adjustment is necessary. The common adverse drug reactions include mouth ulcers, infections, weakness, fatigue, diarrhea, and cough. The health care providers need to inform patients of the possible adverse drug reactions, and of the combined use with different mechanisms of action of the drugs.