Abstract: Bromine is an important basic chemical raw material. The traditional process of bromine extraction needs to absorb the free bromine monomer into the absorbed complete solution. Then, through distillation, condensation, washing and other steps, the refine bromine can be achieved. However, the steps are tedious, and a large number of stream and condensated water are needed. Also, the energy consumption of this method is great, and the equipment scale of occupying is large. Therefore, in this paper a new idea with the short process and high added value utilization in the process of bromine extraction, comes up with a new way to produce HBr. The bipolar membrane electrolysis(BMED) technology was used to prepare NaOH and HBr with NaBr as the raw material. The effects of the current intensity, the initial mass concentration of NaBr, and the initial concentrations of NaOH and HBr in acid chamber were studied. The effect of acid in raw material was also investigated. The results show that increasing the direct-current (DC) intensity of the membrane stack is beneficial to the production of acid and alkali. However, compared to operation at the low current intensity, the current efficiency is lower, and the energy consumption is higher. The suitable current intensity is 2.5~3.0 A. When the initial mass concentration of NaBr is in the range of 40~50 g/L and the initial concentrations of acid and base is in the range of 0.1~0.2 mol/L, a low energy consumption and a high current efficiency are achieved. Both the current efficiency and energy consumption decrease with the increase of the initial concentrations of acid and alkali. The introduction of acid in the raw material inhibits the alkali production, while it facilitates acid production greatly.