Objective To explore the application effect of low-frequency pulse electrical stimulation on urinary outcome and bladder function in postpartum women with postpartum urinary retention (PUR). Methods A total of 86 postpartum women with PUR in Zhengzhou Maternal and Child Health Hospital from June 2022 to June 2024 were selected as the research subjects. The patients were randomly divided into the pelvic ?oor rehabilitation group and the electrical stimulation group according to the principle of single-blind randomization, with 43 cases in each. The pelvic ?oor rehabilitation group was given Kegel exercises, and the electrical stimulation group was given low-frequency pulse electrical stimulation on the basis of the pelvic ?oor rehabilitation group. The urinary outcomes, bladder function and quality of life of the two groups were compared. Results The time of first urination and the level of residual urine volume in the bladder after ?rst urination in the electrical stimulation group were lower than those in the pelvic ?oor rehabilitation group; the level of the ?rst urination volume of the electrical stimulation group was higher than that of the pelvic floor rehabilitation group (P < 0.05). One day before discharge, the levels of initial bladder volume, maximum bladder capacity and maximum urine ?ow rate in both groups increased compared with those before intervention, and those in the electrical stimulation group were higher than those in the pelvic ?oor rehabilitation group (P < 0.05). At the 12-week follow-up after discharge, scores of physical, social and cognitive functions in both groups increased compared to those before intervention. The scores of the electrical stimulation group were higher than those of the pelvic floor rehabilitation group (P < 0.05). Conclusion Low-frequency pulse electrical stimulation can regulate the bladder function of postpartum women with PUR, improve their urinary outcomes, and enhance their quality of life.