This thesis discusses the use of the Jigsaw learning model to improve student learning outcomes in the subject of Islamic Religious Education in Class X DKV SMK Negeri 9 Muaro Jambi, this research is a classroom action research (CAR), the type of approach uses the Mixed Method approach. In collecting data using the method of Observation, Interview, Question Test, and Documentation. The observation method is used to measure the activities of teachers and students in each cycle. The interview method was used to find out opinions and descriptions at SMK Negeri 9 Muaro Jambi, the test method was used to determine students' learning abilities after participating in learning using the Jigswa Cooperative learning model, and documentation was used to describe what happened in the classroom during the learning process. The results of this study indicate that the use of the jigsaw cooperative learning model can improve student learning outcomes in class X DKV SMK Negeri 9 Muaro Jambi, namely in the first cycle the average student score was 67.4% and experienced an increase in cycle II to 83.98%. Based on the results of the data analysis obtained, it can be concluded that learning Islamic Religious Education using the jigsaw learning model can improve learning outcomes in the subject matter of Islamic dress code from the post-test score in each cycle.