Renal CA refers to kidney cancer. CA is cancer, renal CA stands for kidney cancer, which is a kind of malignant tumor of kidney, a kind of malignant tumor originated from renal tubular epithelium, the cause of its development is not clear, but it is considered to be related to genetic factors, obesity, smoking, hypertension, etc. Typical symptoms are hematuria, lumbar pain, and abdominal mass, and early stage tends to lack of clinical manifestations, and most of them are already in middle stage or late stage when the obvious symptoms appear. Early stage kidney cancer has a better prognosis, while late stage kidney cancer often has a worse prognosis. Once kidney cancer is diagnosed, one should cooperate with doctors in time to take treatments, and early stage kidney cancer can be treated by surgery; some patients do not have surgical indications, so they can take targeted therapy, interventional therapy, ablation therapy, etc. If kidney cancer is suspected or diagnosed, one should cooperate with doctors in time to take treatments. If kidney cancer is suspected or diagnosed, it is recommended to go to regular hospitals for comprehensive assessment of the condition, follow the doctor’s instructions, and choose the appropriate treatment plan to improve the prognosis of the patients, so as to avoid delaying the condition.