In recent years, environmental awareness has increased, and plastic reduction has always been an important link. However, the promotion of concepts is still not as good as the actual actions. Therefore, this theme combines home economics, art, and chemistry, and integrates the plastic reduction movement into the curriculum. The home economics class allows students to actually implement plastic reduction in their daily lives by shooting videos and share their experiences. The art class uses line stickers, famous paintings and slogans to remind everyone to reduce plastics in a cute, humorous and witty way. It is expected to be put on the shelves in the future and quickly promoted through social software. The chemistry class provides an in-depth analysis of the causes of plastic formation. Through exploration and practice, students are inspired to learn and realize that plastic reduction is urgent.