The electric discharges of the post-pelvic ganglionic vesical nerve fibers were recorded to investigate the effect of acupuncture on the function of urinary bladder. It has been dernonstrated that the changes of the pressure-volume of urinary bladder are controlled not only by the wall of the uinary bladder its self

but also by the regulation of parasympathetic nerve; the e1ectro-acupuncture can play an role of regulation in the functional state of urinary bladder through nerves