Ureteral tumors are not necessarily advanced when detected, and the exact stage is related to the extent of tumor invasion, lymph node metastasis, and the presence of distant metastases. Ureteral malignant tumors occur in malignant neoplastic organisms originating from epithelial or mesenchymal tissues of the ureter. Pathologic types include urothelial carcinoma, squamous cell carcinoma, adenocarcinoma, and smooth muscle sarcoma. Ureteral tumors can be clinically staged on the basis of TNM profile.T stands for the presence of in situ tumor.N stands for the presence of lymph node metastasis and M stands for distant metastasis. If the ureteral tumor is found early, the tumor is limited in extent, and distant metastasis has not yet occurred, then it is in the early or late stage. Once distant metastasis occurs, it indicates that the tumor has reached the advanced stage. It is recommended that patients go to the hospital as soon as possible to clarify the pathological type and stage and receive standardized treatment.