Many changes occur in the world of education as a result of technological advancement, including the compilation of a module. Digital modules that students can easily access and that have been compiled based on an analysis of student learning obstacles are required. Therefore, this research aims to develop a digital module based on student learning obstacles and it employs the theory of Digital Didactical Design (DDD). DDD contains components of learning objectives, learning activities, process-based assessment, social relations, and integrated technology. This is an on-going study relying on ADDIE (Analyze, Design, Development, Implement, Evaluation) model and it reveals the results from Analyze, Design, and Development stages. In the analysis stage, several instruments, such as test, interviews, and documentation, were used to encounter some learning obstacles in solving the combination problems faced by the vocational high school students. The next stage is designing the digital module based on the students' learning obstacles using DDD components. And in the development stage, the validity and practicality of the module are being tested and the results are very valid and practical. Thus, this digital module was feasible and can be used in teaching combination for vocational high school students to minimize learning obstacles.