Bus　rides　have　become　a　routine　choice　for　the　large　population　to　travel　in　Beijing.　By　the　end　of　November　2020,　82.84%　of　all　buses　in　Beijing　had　switched　to　electric　vehicles.　A　solution　to　the　problem　of　charging　a　huge　number　of　battery　electric　buses　(BEBs)　in　urban　areas,　especially　in　crowded　cities　with　large　populations,　has　to　be　found.　In　the　present　paper,　a　calculation　model　based　on　the　levelized　cost　of　electricity　(LCOE)　is　established　for　comparison　and　analysis　of　the　BEB　charging.　The　calculation　results　show　that　the　hybrid　charging　mode　is　economically　feasible.　Moreover,　from　the　perspectives　of　optimizing　operation　shifts　and　responding　to　emergency　situations,　hybrid　charging　mode　is　applicable　to　the　current　electric　bus　system.　The　calculation　results　also　show　that　the　use　of　BEBs　as　the　main　ground　public　transportation　in　Beijing　can　substantially　reduce　CO2　emissions　and　save　huge　fuel　costs.　Its　application　is　a　very　wise　choice.　The　analogy　calculation　on　Tongzhou　District,　the　sub　center　of　Beijing　which　is　under　construction,　shows　that　the　use　of　BEBs　in　Tongzhou　can　reduce　CO2　emissions　by　about　34.6%　on　average　compared　with　fuel　buses.　The　population　is　the　main　influencing　factor　of　analogy　calculation.