To study the electromagnetic driven performance, temperature rise performance and micturition performance of the bladder power pump, 3D FE models of the electromagnetic driven system and the bladder power pump were established. Based on the models, the electromagnetic driven force, temperature rise, intravesical pressure, urine flow rate and urination time were investigated, taking into account the effects of the electromagnet current, air gap and number of permanent magnets. The results show that the 3D FE models are effective and practical; the electromagnetic driven force, intravesical pressure and urine flow rate are enhanced and the times of intravesical pressure peak and urination are reduced by increasing the current, number of permanent magnets and reducing the air gap; the initial electromagnetic driven force is 8.50 N, the maximum intravesical pressure is 8.36 kPa, the maximum urine flow rate is 25 mL/s, the time to intravesical pressure peak is 5 s, the urination time is 40 s, the temperature rise is 9.42 ℃, the results accord with the micturition performance of human.The research provides theoretical guidance for design of the bladder power pump for animal and clinical studies.