Low malignant potential uroepithelial tumors are usually incurable, but some studies claim that the clinical cure rate can be as high as 70% to 80%, with a high likelihood of recurrence. Low malignant potential uroepithelial tumors are usually referred to as papillary uroepithelial neoplasms of low malignant potential (PUNLMP) of the bladder.The WHO (2004) / ISUP classification system classifies non-invasive papillary migratory cell tumors into four grades: papillary, PUNLMP, low malignant papillary uroepithelial neoplasms, and high malignant papillary uroepithelial neoplasms. If only low malignant potential uroepithelial tumors are detected at present, through timely treatment, most of the patients have a good prognosis, and the clinical cure rate is as high as about 70%~80%. However, low malignant potential uroepithelial tumors cannot be cured and there is a risk of tumor recurrence. It has been claimed that most of PUNLMP have good clinical regression, and about 14% of patients will have tumor recurrence after surgery, of which about 50% will have pathological progression, mostly to low-grade non-invasive papillary uroepithelial carcinoma. At present, low-grade premalignant uroepithelial tumors should be detected as soon as possible to regular hospitals for treatment, surgical treatment, and intravesical instillation treatment according to the situation.