Non-invasive uroepithelial carcinoma refers to the cancerous transformation of the epithelial cells of the urinary tract without infiltrating the tissues around the bladder, which belongs to the tumors with lower degree of malignancy, with milder symptoms, and with better results in early treatment. After the appearance of non-invasive uroepithelial cancer, it will lead to frequent urination and urgency or hematuria. Meanwhile, with the development of cancer cells, it will also directly damage the health of immune system, which will cause weakness and other uncomfortable symptoms. Non-invasive epithelial urothelial cancer itself is divided into low grade and high grade, and early control of the cancer cells and removal of the cancerous tissue can effectively improve the survival rate. Currently, surgical resection is the main treatment for non-invasive uroepithelial cancer. Depending on where the cancer cells grow, the cancerous tissue can be effectively removed by removing part of the bladder tissue, ureter or epithelial tissue, etc., so as to control the spread of cancer cells. And it is necessary to adhere to the postoperative perfusion therapy and regular review. The cure rate and prognosis of non-invasive uroepithelial carcinoma are relatively good, so it is recommended to treat it as early as possible, and do a good job of personal hygiene and cleanliness during treatment and life.