The effects of different factors on the output and current efficiency of electrolytic manganese and man-ganese dioxide in the yin-yang cell were investigated. Solution concentration, electrolysis temperature, pH, current density, additive content and plate material were studied. Experiment shows that the double membrane process 3 rooms, the control solution concentration of Mn2+ 35 to 41 g/L, electrolytic tempera-ture 35 to 37 ℃, cathode pH = 7~7.2; Anodic acid concentration of 2.5mol/L, cathode current density of 350~400A /m2; Anode 800A/m2, cathode additive SeO2 concentration 0.03~0.04g/L, cathode plate using stainless steel plate and anode plate using titanium coated lead dioxide plate, the anode and cathode have high yield, and the current efficiency is higher than 70%,and the output of manganese dioxide in anode 1L electrolyte is higher than 40g.