Cystoscopy for hematuria is done mainly to determine the exact location of hematuria bleeding. Cystoscopy belongs to a kind of endoscope, which is mainly composed of four parts: the imaging system, the electroscope sheath, the examination speculum and the core. It is mainly used to examine diseases of the bladder and urethra. Cystoscopy is an invasive test and is usually performed after other non-invasive imaging tests have been inconclusive, such as ultrasound and CT. Cystoscopy is not always necessary; if the cause of bleeding is found in a patient with hematuria and the cause of bleeding is not directly related to the bladder, cystoscopy may not be performed at this time. And when hematuria patients do not identify the specific location of bleeding through imaging tests, then they need to undergo cystoscopy under the operation of specialized doctors to clarify the condition. Therefore, it is recommended to perform cystoscopy according to the doctor’s judgment in order to clarify the development of the disease.