Through　the　study　on　how　to　choose　sending　the　right　type　and　content　of　an　argument,　which　has　been　used　in　Argumentation-based　negotiation　of　electronic　business,　this　paper　brings　forward　a　kind　of　evaluation　model　to　solve　the　problem.　This　model　aims　to　help　Agent　make　quantitative　evaluation　of　their　argumentation　strength　respectively　in　terms　of　multiple　influencing　factors,　when　it　is　facing　a　variety　of　options　for　the　type　and　content　of　an　argument.　Therefore,　to　achieve　the　goal　that　guide　the　Agent　to　send　appropriate　type　and　content　of　an　argument.　The　model　is　characterized　by　the　introduction　of　fuzzy　mathematics　to　quantify　the　qualitative　indexes　reasonably,　so　that　it　can　overcome　the　deviation　from　the　objective　reality　that　using　specific　values　to　represent　the　argument＇s　strength　directly　in　the　past　research.　Finally,　we　calculate　and　analyze　an　example　so　as　to　verify　the　rationality　and　validity　of　the　model.