This paper attempted to establish an “Integrated Problem Solving Model,” which is named “Integrated 8 Disciplines-I8D.” This model combined improvement steps and techniques including QC Story, Lean, Six-sigma and 8D. In addition, this system applied TRIZ (Theory of Inventive Problem Solving) tools to construct a quick and valuable problem solving model. By adopting I8D to the semiconductor manufacturing company as case study, the result indicated the yield rate of 3D IC, and modified the original 8D processes. To conclude, this paper proved that integrated model could bring benefits to the case study, by employing this model’s feasibility to reform its weaknesses and to upgrade its strengths.