The invention provides a urethral catheterization product structure. The urethral catheterization product structure comprises an outer sheath, a balloon and an inner core, wherein an air injection channel and an inner core channel are formed in the outer sheath, a urine inlet and a urine outlet communicating with the inner core channel are also formed in the far end and the near end of the outer sheath respectively, the urine inlet is in a blunt head shape, and the inner core is further provided with a guide end. In an initial state, the inner core is arranged in the inner core channel in a penetrating manner, the guide end extends out of the inner core channel to be exposed out of the outer sheath, so that the guide end is used to guide the far end of the outer sheath to enter a urinary bladder via the urethra of a patient, the balloon is in an expansion state to be positioned in the urinary bladder, then, the inner core is dismounted from the inner core channel, and the exposed urineinlet, the inner core channel and the urine outlet form a channel to discharge urine in the urinary bladder. Therefore, the urethral catheterization product structure can reduce irritation to urinarybladder mucosae and urethra mucosae, thereby improving the use comfort.