The urinary epithelium is a general term for the covered epithelium of the urinary system, mainly the migratory epithelium. The renal pelvis, ureter, bladder and urethra are all covered with metastatic epithelium. Tumors in these areas have similar etiology and pathological changes, and can occur simultaneously or sequentially in different areas. Among the epithelial tumors of the urinary tract, bladder tumors are the most common, while pelvic and ureteral tumors are relatively uncommon. The most common clinical symptom is intermittent, painless hematuria of the naked eye. If repeated urinalysis is performed, almost all patients have microscopic hematuria. Epithelial tumors of the renal pelvis and ureter may occasionally present with renal colic due to blockage of the ureter by a blood clot, as well as earthy or streaky blood clots. Bladder tumors are also usually prone to blood clots, as well as bladder irritation symptoms such as urinary frequency and urgency. Difficulty in urination and urinary retention may occur when the mass blocks the bladder outlet. When the mass invades the ureter, it can cause ureteral obstruction. In terms of diagnosis, any adult, especially those over 40 years of age, with painless hematuria or a long-term untreated “cystitis” should be alerted to the possibility of an epithelial tumor of the urinary tract. Ultrasound, IVU, CT, MRI, cystoscopy and ureteroscopy can greatly increase the early diagnosis rate. The key to the efficacy of tumor diagnosis and treatment lies in early prevention, early diagnosis and early treatment. With the advancement of science and technology, urological detection methods have also been developed continuously, and our department is now equipped with many advanced hardware devices. In the past 10 years, we have found many early uroepithelial tumors, and after timely surgery, the prognosis is quite positive.