Whether　the　development　of　Beijing　at　high　speed　is　sustainable　or　not　is　a　pivotal　problem,　so　we　use　the　DEA　(data　envelopment　analysis)　model　to　evaluate　the　sustainability　of　Beijing　based　on　the　input-output　matrix　and　the　index　of　sustainable　development.　We　know　Beijing　has　the　potential　of　sustainable　development,　but　we　need　to　improve　the　utility　of　manpower,　material,　and　resource,　and　we　must　pay　attention　to　the　scale　benefit,　the　technology　availability　and　the　environment　protection,　and　it　is　necessary　to　advance　the　recycling　economy　for　Beijing＇s　sustainable　development.