Renal pelvis cancer causes no function of kidney due to prolonged obstruction, and the specific treatment plan should be judged comprehensively according to the disease condition. If the disease is mainly confined to the kidney, radical resection can be done, and auxiliary radiotherapy can be applied after operation; if the disease has been widely invaded or metastasized, palliative treatment can be chosen. 1. If the lesion is relatively early and limited to the renal pelvis or renal tissues, radical resection can be performed through surgery, and radiotherapy can be assisted to control the lesion after surgery, usually local radiotherapy is chosen, and paclitaxel can be used as the chemotherapeutic drug. 2. If the lesion enters the advanced stage, invades the surrounding tissues or has distant metastasis, and the patient cannot tolerate the surgery, palliative treatment can be chosen, mainly radiotherapy and chemotherapy, and radiotherapy can choose external irradiation radiotherapy or particle implantation; commonly used drugs in chemotherapy include paclitaxel and so on; and target therapy such as sorafenib can also be chosen. If renal pelvis cancer causes obvious low back pain or other discomforts, it is necessary to consult doctor for observation in time and carry out standardized treatment under the guidance of clinicians.