The goal of capstone project is to train students to be able to apply the required knowledge and skill to collaboratively complete the assigned work.The project-based learning(PBL)is a popular strategy used by teachers to guide students to organize teams to solve problem collaboratively and to enhance students creative and problem solving abilities in capstone project.However,the traditional PBL strategy cannot effectively enhance the students abilities because the previous good cases cannot be easily shared and reused.Therefore,our idea is to develop a good platform to be able to share and reuse the cases together with portfolios to motivate students imaginative power and creativity and the teachers can easily assess the students learning achievements.Because Case-Based Reasoning(CBR)techniques consisting of cases retrieve,reuse,revise and retain can be used to model the computer reasoning,we develop a project-based learning platform using the CBR techniques to provide the case scaffoldings and reserve the learning portfolio.We further design an experiment based upon our learning platform to complete the e-book visual creative design.The experimental result shows that the given appropriate learning scaffoldings can guide students to improve the creative and problem solving abilities.