Kidney is an important organ to maintain the normal life activities of human body. In recent years, the incidence of kidney tumors has been increasing year by year, especially with the enhancement of people’s health awareness and the popularity of medical checkups, more and more kidney tumors are found, most of which are early-stage kidney cancer, but there are still many patients whose disease has often entered a more critical stage when they are found and diagnosed. The clinical manifestations of kidney cancer are so varied that it can be easily misdiagnosed as other diseases. Some patients may not have any symptoms, but the tumor may have progressed extensively in the body by this time; some patients have lumbosacral pain as the first symptom; some patients have varicocele as the first symptom, etc. The kidney is hidden and the main connection with the outside world is urine. Hematuria is the most common symptom to detect kidney cancer, but the appearance of hematuria indicates that the tumor has invaded the renal pelvis and other collecting system, so it is no longer an early symptom. For many years, hematuria, pain and lumps are called the “triple signs” of kidney cancer, but in fact, only about 10% of patients have all three signs at the time of consultation, and few of them are likely to be cured. Therefore, it is very necessary to have a comprehensive understanding of some common clinical manifestations of kidney cancer. 1.No obvious symptoms: At present, more than 40% of kidney cancers are found accidentally due to health checkup or other reasons, without obvious symptoms or signs, and its detection rate is increasing year by year, most of them are early lesions with good prognosis. Regular physical examination is important. 2.Typical local symptoms: hematuria, back pain and abdominal masses, “kidney cancer triad”.