TRIZ　theory　is　proven　to　be　an　efficient　tool　for　engineering　design　by　many　big　companies.　It　can　be　very　helpful　with　solving　practical　problems.　This　article　develops　an　innovation　method　that　introduces　TRIZ　theory　into　mechanical　design　methodology.　A　design　of　assembly　technology　clamp　is　developed　to　prove　the　effectiveness　of　the　method.　This　paper　describes　an　assembly　technology　clamp　design　to　be　used　to　produce　stirring　tank　for　improving　the　degree　of　automation　based　on　the　TRIZ　approach.　It　could　suit　to　different　diameter　of　the　tank,　which　improves　efficiency　highly.　Finally,　it　proved　that　the　design　proposed　by　TRIZ　is　feasible.