Kidney cancer is a relatively common substantial malignant tumor of the kidney, and there is a trend of increasing youthfulness in recent years. There are no particularly obvious symptoms in the early stage of kidney cancer, so it is easy to be ignored, resulting in a more serious condition when it is found. However, some kidney cancer patients may have hematuria and unexplained fever in the early stage, but of course, such hematuria is not visible with the naked eye, but can be detected only under a microscope or through instrumentation. Although there is no obvious symptom in early stage of kidney cancer, in the middle stage of development, kidney cancer may enter the renal pelvis and cause different degrees of hematuria with blood clots. If the blood clot blocks the ureter, severe renal colic will occur. The pain in the lower back is caused by the continuous growth of the kidney cancer mass pulling the kidney peritoneum, and the pain is persistent. In a small number of patients with kidney cancer, a lump is found in the abdomen, which is usually located in the upper abdomen under the rib cage and can move up and down with breathing movement. However, in the advanced stage of kidney cancer, this lump will be completely immobilized as the tumor invades the organs or muscles around the kidney. Hematuria, pain and lump are called the triad of kidney cancer, so when these symptoms appear in the body, it is necessary to go to the hospital for examination of related aspects to exclude the possibility of kidney cancer. It is possible to cure kidney cancer in early treatment, so early detection is very important.