Physical education teachers should have sufficient content knowledge (CK) to provide high-quality physical education for students. CK is an important knowledge base for pedagogical content knowledge (PCK), which is considered the teacher's knowledge to adapt the instructions in the teaching and learning process. Mature PCK can be an indicator of in-depth CK. A professional development CK workshop is an effective way to help physical education teachers improve their PCK and in turn, their teaching effectiveness. To effectively plan and evaluate the professional development workshop, one promising method to develop teachers' CK involves a logic model. A logic model is a system to represent information that shows how a workshop is planned, worked, and evaluated using three key components: inputs, outputs, and outcomes. A logic model provides a visual way of showing how the CK workshop strives to reach the desired goals. Although logic models are frequently used in many areas (e.g., education, parenting and family programs, and physical activity intervention programs), applications of logic models in the area of physical education have been rare. Therefore, this article aims to explain how a logic model can be implemented to plan a professional development CK for physical education teachers.