It is well known that many of our friends and relatives have been mercilessly killed by cancer, but this is not the case with kidney cancer. The reasons are mainly as follows: 1. Due to the increase of public health awareness, the concept of annual regular medical checkup has been accepted by many people, so many patients in the early stage of kidney cancer are detected when the kidney tumor is only 2-3 centimeters. 2.God has fortunately given us two kidneys, thus when one of them has a problem, we can decisively remove it completely, while the remaining other kidney can fully meet our body’s needs. 3. The structure of the kidney itself and its surrounding determines that kidney cancer is not easy to develop early metastasis. The kidney itself has an intact envelope and a thick fat capsule around it. These two barriers limit the early metastasis of the tumor, but if it is found too late, the tumor breaks through the envelope and the chance of metastasis increases a lot. 4. About 90% of kidney tumors are malignant, while misfolded tumors, which are the majority of benign tumors, have specific manifestations on CT and ultrasound, so they are not as easy to be misdiagnosed as other cancers, and patients can get timely diagnosis and treatment. Then what should we pay attention to in our daily life to keep kidney cancer away from us? Like other cancers, the exact cause of kidney cancer is not yet clear, but certain factors have been confirmed. The second is obesity. Avoiding excessive exposure to cadmium and coke in life and work can also prevent kidney cancer.