Under　the　background　of　smart　city　sweeping　the　global　context,　as　a　new　public　management　and　an　important　part　of　reinventing　government,　the　application　of　e-government　information　technology　has　been　regarded　as　one　of　the　main　source　for　government　change　and　innovation.　Based　on　e-governmen-trelated　cross-sectional　data　of　every　districts　in　Beijing,　this　paper　uses　data　envelopment　analysis　(DEA)　to　carry　out　performance　studies,　which　found　the　government　in　terms　of　e-government　input　and　output　problems　and　make　recommendations　accordingly,　in　order　to　reduce　investment　in　information　technology　is　invalid,　and　further　promote　our　long-term　e-government,　to　provide　a　theoretical　basis　for　orderly　development.