Cystoscopy is one of the urethra and bladder examinations commonly used in urology to observe the urethra and bladder for lesions. The specific method steps are as follows: 1. Before the examination, relevant contraindications such as acute inflammation of the urethra, urethral stenosis, systemic bleeding disorders, and female menstruation should be excluded. 2. During the examination, the patient is placed in the truncated position, lying flat on the examination bed, with both lower limbs separated on the stent, maximizing the exposure of the perineum. 3. The doctor strictly disinfects the patient’s vulva around the urethral opening. Choose local anesthesia or general anesthesia for the urethral mucosa. 4. Put the cystoscope through the urethra into the bladder, the process of observation of the urethra there is no abnormality or narrowing, observation of the specific structure of the bladder, to determine whether there is mucosal lesions, congestion, polyps, stones, etc., if you find abnormal tissues, you can take out the pathological tissue for biopsy. After cystoscopy, you need to stay in the hospital for observation, and then pay attention to drink more water and urinate more to improve the symptoms of hematuria and frequent urination due to the examination, and you also need to take anti-infective drugs under the guidance of the doctor to prevent infection.