As a new mode of education, micro-classes are characterized by their short and exquisite contents, various forms of expression and not limited by time and region. A good teaching design is the key to the success of the whole micro-course. Taking Merrell's five-star teaching principle thought as the micro-course design guide, the author puts forward the design idea with the student as the main body, and the design principle with the goal focusing on solving the problem. Using the five-star teaching principle to design the micro-course teaching process of the university physics course, it has achieved good results.