Kidney cancer, also known as renal cell carcinoma, renal adenocarcinoma or clear cell carcinoma, is the most common of renal malignancies, accounting for 85%. The high incidence age is 50-70 years old, and there are often no obvious symptoms in early stage. 60% of kidney cancer is detected during health checkup or other disease examination. The clinical manifestations of kidney cancer are diversified, and the early clinical manifestations are very general, such as weight loss, weakness, anemia, emaciation, fever, hypertension, fast blood sedimentation, abnormal liver function, etc.; some studies have found that kidney cancer tissues can secrete many kinds of hormones, which can cause corresponding symptoms; some kidney cancer patients have no symptoms in early or late stage, but are detected by ultrasound or CT scan during health checkup or other diseases. Some patients with kidney cancer may not have any symptoms in early or late stage, but are detected by ultrasound or CT scan during health checkup or other diseases, and usually have the following symptoms: 1. intermittent painless hematuria, dull pain in kidney area, and systemic symptoms, including hypothermia, anemia, erythrocytosis, hypertension, hypercalcemia, etc. 2.Knock pain in the kidney area, renal enlargement, symptomatic varicocele and abdominal swelling. 3.Urological X-ray plain film and urography, the affected kidney shadow is enlarged, and the renal pelvis and calyces are deformed by pressure. Cystoscopy shows blood spraying from the ureteral opening on the affected side. 4.Radionuclide kidney scan, the cancer >3cm appears as a radioactive sparse area. 5.Renal arteriogram (more diagnostic value for early cancer): it shows the pathological vascular image of cancer tumor. If epinephrine is injected into the renal artery and then selective renal arteriogram is performed, the pathological vascular image will be more clearly shown. 6.B ultrasound and CT examination have high value for early diagnosis of kidney cancer. If the above conditions are found to be highly suspicious of renal cell carcinoma, active treatment is needed. Early examination, early detection and early treatment are the most helpful to patients’ prognosis.