Abstract:In order to avoid the high risk and uncertainty brought by the R D project"s own capital and technology-intensive, through the research on the full-cycle quality cost of R D enterprises, the quality cost structure of each stage of the R D project is analyzed, and the relationship between the various parts and control points, integrate the various stages to build a full-cycle quality cost management model for R D projects, and establish a quality cost decision model based on sensitivity coefficient. Finally, the automobile research and development project is taken as an example to verify the model in the text. As a result, the project can be completed at low cost and high efficiency, and the product market competitiveness is improved.