To solve complex problems scattered in production and management areas, it is necessary to view relations among the problems in system`s standpoint. Thus, the systematic approach is emphasized in TOC (Theory of Constraints). Thinking process (TP) of TOC is adequate to understand the tangled problems with cause and effect relations. After obtaining undesirable effect (UDE) lists through the interview of top decision maker, current reality tree (CRT) should be drawn to find what effect is a source of the other effects. And then solutions are found using solver`s intuition with the conflict resolution diagram (CRD). This study proposes that an inventive method can be used to find solutions without using intuition. Recently, TRIZ (Russian abbreviation for Theory of Inventive Problem Solving) receives much attention to solve problem inventively and scientifically. In this study, the contradiction matrix and 40 inventive principles are used to overcome the technological contradiction. Lastly, an example for an actual company is also introduced to verify the procedure which comprises TP of TOC and TRIZ steps.