To address the urgent issue of rehabilitation treatment for patients with bladder disorders,a portable bladder function rehabilitation device was developed.The device is based on the principle of indwelling catheterization and utilizes the STM32 single chip microcomputer as the control core.It enables real-time measurement of bladder pressure and urine volume using pressure and weighing sensors respectively.The software is designed to cater to the specific needs of patients with bladder dysfunction,offering various control modes such as unblocked mode,timed mode,fixed pressure mode,timed fixed pressure mode,urine retention mode,and segmented low pressure mode.These modes facilitate bionic urine drainage,control,and training,thus supporting the retention catheterization process and promoting bladder function.Experimental results demonstrate the reliability of the control system in the portable bladder function rehabilitation device,effectively meeting the requirements of bladder rehabilitation training for patients undergoing different indwelling catheterization procedures.