Based　on　the　theory　of　ecology,　enterprise　is　viewed　as　life　entity　in　the　social　environment.　What　enterprise　bionics　concern　most　is　how　to　measure　the　vitality　of　those　enterprises.　This　article　modifies　the　original　index　system　based　on　the　theory　of　enterprise　bionics,　and　chooses　the　real　estate　industry　to　do　the　empirical　research.　Analyzing　enterprises＇　business　age　is　a　warning　to　those　enterprises　whose　vitality　is　weak.　From　the　comparison　of　enterprises＇　business　age　and　nature　age,　this　article　has　found　that　the　business　age　of　some　enterprises　like　Vanke,　Shenzhen　special　Economic　Zong　Real　Estate,　AVIC　and　Gemdale　are　between　30　and　40,　and　those　enterprises＇　life　vitality　is　strong　and　competitive;　but　some　enterprises＇　business　age　like　RongAn,　DingLi　Technology　and　Yihua　are　between　60　and　70,　which　means　those　enterprises＇　life　vitality　is　weak　and　not　competitive.　The　warning　is　serious.　©　2013　Springer　Science+Business　Media　New　York.