Objective To observe the clinical effects of sacral electrical stimulation and behavioural therapy in treating elderly patients with overactive bladder.Methods A total of 92 elderly female patients with overactive bladder(OAB)admitted to our hospital from October 2020 to October 2023 were collected and divided into four groups,namely the electrical stimulation group,the behavioral therapy group,the combined treatment group and the control group,with 23 cases in each group by the random number table method.The electrical stimulation group was treated with electrical stimulation at Shenshu,Huiyang and Ciliao acupoints of the sacral region by the push-and-run meridian transport instrument.The behavioral therapy group was guided to have correct lifestyles and undergo pelvic floor muscle training and bladder function training.The combined treatment group received the combination of electrical stimulation and behavioral therapy.The control group was given conventional drug treatment.The study was conducted with treatment before and 3 months after treatment as the research endpoint,and the OABSS scores,and the initial bladder capacity,maximum bladder capacity,and residual urine volume of the patients were evaluated.Results After treatment,combined treatment group was significantly lower than other three groups(P<0.05),electrical stimulation group was significantly lower than control group and behavioural therapy group(P<0.05).About first desire to void and maximum cystometric capacity,combined treatment group and electrical stimulation group were significantly higher than before(P<0.05),combined treatment group was significantly higher than electrical stimulation group(P<0.05).These two groups were significantly higher than control group and behavioural therapy group after treatment(P<0.01).About post void residual,four groups were no marked difference between posttreatment and prior treatment(P>0.05).Although there was a statistically significant difference in post-void residual volume among the four groups post-treatment(P<0.05),the changes were minimal and of limited clinical relevance.Conclusion Sacral electrical stimulation combined with behavioral therapy effectively improves clinical lower urinary tract symptoms in elderly female patients with OAB,enhancing both initial bladder capacity and maximum bladder capacity.