Renal pelvis tumor is a kind of tumor occurring in the epithelium of upper urinary tract, most of them are malignant, and usually do not cause leg pain, its main symptoms are hematuria, lumbar pain, mass and so on, and sometimes can be accompanied by systemic symptoms. 1. Bulbous hematuria: Bulbous hematuria is the most common symptom of renal pelvis tumor at the beginning, about 80% of patients consult the doctor with this symptom, characterized by intermittent, painless, and streak-like blood clots when bleeding is more. 2. Lumbago and mass: lumbago is mostly caused by blood clot passing through ureter or tumor invading into retroperitoneal tissues; mass is mostly caused by tumor or obstruction causing hydronephrosis. 3. Systemic symptoms: some patients may have systemic symptoms such as anemia, loss of appetite, emaciation, and unexplained fever. It is suggested that those who have leg pain symptoms should go to the hospital in time to find out the specific cause and then take treatment to relieve the leg pain symptoms. Those with renal pelvis tumors need individualized treatment according to the specific situation, and during the treatment, they also need to do a good job in diet, exercise and other aspects of care.