Production of electronic high purity manganic manganous oxide by manganese oxide ore is characterized by taking manganese oxide ore as materials, immersing manganese from manganese oxide ore under ordinary pressure and temperature by sulfur dioxide, removing iron, copper, nickel, lead heavy metal ion in manganese sulfate mother liquid, obtaining purified manganese sulfate solution, coordinating the ammonia water and ammonium acid carbonate, depositing manganese, obtaining hydrated manganic hydroxide and manganese carbonate mixture, high temperature roasting the mixture, cooling washing for 3-5 times, drying to obtain manganic manganous oxide or inducing directly the purified manganese sulfate solution into ammonia water, regulating pH value 8-10 with solution temperature 50-70deg.C, inducing the dried air or oxygen for 6-9hrs, washing 3-5 times, filtering, drying to obtain manganic manganous oxide . It achieves low cost, high utilizing rate and product purity.