Patients with superficial bladder cancer need to have a follow-up visit every 3-6 months, depending on the stage of the tumor. At the follow-up visit, they need to fast and abstain from water, and bring all the previous examination data, especially the surgery records and pathology examination sheets, which are often missed. Each follow-up visit requires routine blood tests, biochemical tests, routine urine tests, urinalysis, ultrasound, CT, cystoscopy and a series of other tests to monitor whether bladder cancer has recurred. Among them, cystoscopy can directly observe the growth of tumor in the bladder, and ultrasound can detect whether there is tumor metastasis in the renal pelvis as well as ureter. Patients also need to have a chest X-ray once a year to monitor whether the cancer has metastasized to the lungs. To have a cystoscopy, you need to make an appointment with an application form at your follow-up appointment. The test is done in the cystoscopy room in the Department of Urology on the second floor of the outpatient building. No fasting or water fasting is required. Blood draws are usually available on the day of the test or the next day, while ultrasound and cystoscopy are both done and the patient will get the report after the test. For patients who are in their third month of follow-up after cystectomy, they should be just about finished with their weekly irrigation therapy and ready to start their monthly irrigation regimen (they will need weekly irrigation therapy for a total of eight sessions after cystectomy; and once a month thereafter). At this time, cystoscopy should be scheduled two weeks after the cystoperfusion treatment. This is because after the bladder irrigation chemotherapy has just been done, the bladder may be congested and red, making the cystoscopy field unclear and ineffective for the examination. (The procedure is shown in the figure)