How often a catheter is changed after a total bladder removal depends on the material. Latex catheters are usually replaced in about 7 to 15 days, and silicone catheters are usually replaced in about a month or longer. The catheter is divided into long-term built-in and short-term built-in, short-term built-in in principle need to be removed in about 7 days; long-term built-in, if there is no infection symptoms or ureteral blockage, do not need to be replaced frequently. Latex catheters are usually changed once every 7 to 15 days, and silicone catheters are usually changed once every month or longer. During the period of indwelling catheter, it is necessary to keep the urine drainage smooth, fix the urine bag and urine tube, and the position of the drainage tube and urine collection bag must not be higher than the bladder. The specific replacement time also needs to be based on the patient’s condition, and should be replaced at any time if the urinary catheter drainage is not smooth. It is recommended that patients under the guidance of a professional doctor for the rational use of catheters, and change as needed, abnormalities, should be timely medical treatment to avoid adverse consequences.