Abstract: Micro class is short, easy to understand, diverse forms of expression and other characteristics, favored by students, can improve the interest and participation of learners. Taking pearls as an example, this course starts from the formation of pearls to stimulate students' interest in learning; List the teaching objectives before class, let the students clear new knowledge points; Then, it describes the source, origin, harvesting method, identification method, taste, function and indications of pearl, and modern research results; Finally, list the thinking questions and let the students check the learning results. I think the whole teaching process is clear and smooth, and the "student-centered" teaching concept can be practiced. Students will have a high degree of participation, and the learning effect can reach the expected goal.

Key words: Micro class, Marine traditional Chinese medicine, The teaching design