Renal clear cell carcinoma invades into renal peritoneum, which is a more serious situation. The malignant degree of renal clear cell carcinoma is relatively high, and if it develops into intermediate or advanced stage, the local cancer cells may spread and metastasize, and also invade the kidney peritoneal tissues, leading to symptoms such as hematuria, fatigue, low fever and other discomforts, and also cause continuous damage to kidney tissues, and in serious cases, renal failure or uremia may occur. Once renal clear cell carcinoma invades into renal peritoneum, it is necessary to consider surgery to remove the cancerous tissues as soon as possible, and cooperate with regular radiotherapy and chemotherapy, as well as more bed rest and appropriate nutrition, so as to stabilize the condition and improve the prognosis of patients.