Abstract: This study aims to explore the application of project-based collaborative learning in a university seminar class, adopting a case study method to conduct the teaching design and practice of project-based collaborative learning in the postgraduate course, focusing on the analysis of the changes in the level of students' problem-solving ability in the project-based collaborative learning class, students' learning experience and improvement suggestions. This study found that students' problem-solving ability has improved after participating in a semester of project-based collaborative learning class, and their problem-solving attitudes, problem-solving methods, and problem-solving quality have improved. The students' feedback on the teaching model is good.