The production stage of electrolytic manganese metal includes a series of production processes, which can be roughly divided into three steps, namely, leaching of manganese ore (i.e., raw material processing and leaching), removal of impurities (i.e., neutralization to remove iron, press filtration, sulfidation to remove heavy metals, adsorption and standing of the solution after sulfidation), and electrolysis (i.e., electrolysis process and electrolytic manganese post-treatment process).