This　article　regards　an　industry　chain　as　a　dynamic　strategic　cooperative　alliance　which　is　comprised　of　several　enterprises.　Letter　n　is　used　to　stand　for　the　number　of　these　enterprises.　The　distribution　of　profit　among　the　participants　is　an　inevitable　question.　We　study　the　stability　of　industry　chains　from　the　viewpoint　of　suitable　distribution　of　profit,　because　the　suitable　distribution　of　profit　among　the　participants　is　the　basis　of　stability　of　industry　chains.　First,　we　propose　an　n-person　cooperative　game　model　based　on　the　characteristics　of　an　industry　chain.　Then　we　try　to　seek　the　solution　of　this　model　with　linear　programming,　thereby　giving　a　method　of　distribution　of　the　profits　of　the　industry　chain.　In　the　end,　we　analyze　the　qualifications　of　industry　chain　stability　presumptively.　©　ASCE.