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This research aims to examine project-based cooperative learning design as a strategy to strengthen the profile of Pancasila Students in the Merdeka Curriculum at SMAN 4 Enrekang. The background to this research is based on the importance of character education that is in accordance with Pancasila values, amidst the challenge of declining character index of students at secondary education level. The research method used is a qualitative approach with data collection techniques through observation, interviews and documentation. The research subjects consisted of class XI students and teachers who were involved in the learning process. The research results show that the application of project-based cooperative learning can increase student motivation and involvement in the learning process. Students become more active participants, collaborate well in groups, and show a greater sense of responsibility for the tasks given. In addition, students also develop important social skills, such as communication and conflict resolution, which are in line with Pancasila values. Several challenges were found in implementing cooperative learning, such as differences in student backgrounds which could influence group dynamics. Overall, project-based cooperative learning has proven to be effective in strengthening students' character. This research recommends that other schools consider implementing this method to improve the quality of character education in Indonesia.