Simplex and group composition is the second practice of point, line and surface composition. The purpose of this study was to determine the innovative method of plane composition course. In order to maintain a positive and enterprising attitude in teaching activities, we present an analysis of the use of simplex and grouping in course assignment creation, puts forward opinions, makes judgments and decisions, and constantly optimizes the classroom. We show that in the teaching of plane composition, teachers constantly tap students’ interest points, which can stimulate students’ learning enthusiasm and creative inspiration, and cultivate students’ independent learning ability. The results suggests that the best way to teach is to learn from each other.