The presence or absence of the urge to urinate after cystectomy usually depends on whether the bladder was partially or completely removed. The urge to urinate occurs when the urine fills the bladder and the detrusor receptors in the bladder wall are stimulated and excited and travel up to the cerebral cortex. If the bladder is partially removed, then the muscles and nerves for urination are still there, then the urge to urinate can be active on its own, but the capacity of the bladder is reduced after partial resection, so it is easy to urinate frequently, etc.; if the bladder is completely removed, and the ileum is used to build the bladder artificially, then it will not produce the urge to urinate, and it will be easy to forget to urinate on its own, which will result in the accumulation of urine that will cause kidney damage. If patients experience discomfort after bladder removal, they should seek medical attention as soon as possible, and the doctor will formulate a suitable treatment plan according to the specific situation, so as not to delay the condition.