Starting with the characteristics of decoration, this textbook analyzes the emergence and development of decorative patterns at home and abroad. Through the analysis of the elements of decorative modeling and the law of formal beauty, students can master the basic modeling means and methods of decorative patterns, and master the basic modeling rules, aesthetic principles, pattern composition forms and design methods. Decorative changes are made to design materials such as plants, animals, landscapes and figures, and practical, economical, beautiful, artistic and creative decorative patterns are designed to cultivate students' basic modeling ability and creative thinking. Through the study of decorative basics, students can gradually improve their design skills and innovative ability in art design, improve their artistic creativity and expressive force, boldly innovate in the process of inheriting tradition, and design decorative patterns with local cultural characteristics and the flavor of the times.