The application of learning experiences that support character building in social life tends to be decreasing now and has an impact on students’ character. This research is categorized as level 3 and development research which aim to develop the existing product in order to be better, effective, efficient, practical, interesting, and the researcher examined the development of an action learning approach in building students’ character through community services by applying 4D model stages by Thiagarajan, such as define, design, develop, and disseminate. The data were collected by conducting interviews, documentations, questionnaires, and tests. Meanwhile, the data were analyzed by using product data analysis, preliminary data analysis, and final data analysis. The results of the research indicate that: 1) The process of developing an action learning approach is conducted by applying 4D model stages in order to create a learning approach that has been modified into students’ community services, 2) Action learning approach implemented during students’ community services is appropriate as indicated by the expert validation, while the score is 15 and the average score is 3.75 or 93.75%, categorized as very appropriate. As a result, for further research, it is necessary to create and develop a network or cooperation with the community (within the scope of villages or sub-districts) where the students conduct a practice (the community service).