The Case Study is an important method in public policy research and education. With the development of public policy research and graduate study at the School of Social Development and Public Policy, we have come to realize the importance and necessity of accumulating and using case studies in our teaching. So we have established the CCS in order to accumulate and summarize public policy cases for teaching based on the research done at the School. After two years' work, the CCS has accumulated dozens of teaching cases, some of which have been used in courses such as Public Policy Analysis.