Conflict　is　the　key　factor　to　affect　investment　and　benefits　of　the　industry　technologies　and　innovation　strategic　alliance.　This　paper　constructs　an　investment　decision　model　of　industry　technology　innovation　strategic　alliance　by　discussing　the　influence　of　the　conflict　on　the　alliance　generic　technology　investment　and　the　impact　of　member　benefits.　The　results　suggest　that　maximize　revenue　optimization　of　alliance　generic　technology　investment　and　members　can　be　realized　through　a　investment　portfolio　of　alliance　members.　Moderate　conflict　would　promote　alliance　innovation　performance　effectively.