According　to　the　problems　in　the　so　called　＇the　third　economic　organization＇　between　enterprise　and　market,　the　thesis　theorizes　a　complete　framwork　to　solve　them.　It　makes　clear　the　existing　diverse　forms　of　the　inter-relationships　of　enterprises　and　gives　a　systematic　and　unified　explanation　of　them　from　the　perspective　of　organization　theory.　The　research　technical　route　is　taking　division　of　labor　and　coordination　of　work　as　a　rationale,　the　project　studies　the　evolutionary　process,　path　depandence,　and　choice　of　pattern　of　the　inter-relationships　of　enterprises;　and　on　the　basee　of　it,　it　further　constructs　a　theoretic　framework　of　the　inter-organization　of　relationships　of　enterprises,　and　makes　a　systematic　study　of　the　formation　mechanism　and　evolution　mechanism.　©　2010　IEEE.