In order to overcome the shortcomings of the traditional design method to solve engineering design problems,the inventive problem solving theory(TRIZ)was introduced into the innovative design of the institutions and injection molding process of the injection molding machine.On the basis of the analysis of the problems existed in the actual production operation of the injection molding machine,the TRIZ innovation and theoretical analysis method were used to determine the technical conflict,the conflict matrix table was applied to solve the problem of the principles of the invention,and the ideas and clues provided by the principles of invention of TRIZ theory were used to get the innovative design of the injection organization and hydraulic system of the injection molding machine,and mold heating process.The effectiveness and rationality of TRIZ theory in product conceptual design are fully demonstrated,as well as the feasibility and efficiency of innovative design applied in the field of engineering.