(1) Introduction: ① He was1the most important British architect and product designer at the end of the 9th century and the beginning of the 20th century. He is the representative of Glasgow Group. (3) He formed a unique Scottish new art expression style in design, that is, a new expression of alternating movement of soft curves and hard and elegant vertical lines, which is called "straight line style" in design history.

(2) Style features: ① The combination of geometric form and organic form is a simple and highly decorative graphic design feature. ② Advocating straight lines, simple geometric modeling and neutral color schemes such as black and white are contrary to the decorative motives of Art Nouveau which advocates curves and naturalism.

(3) Representative works: high-backed chair, Glasgow Art Institute, interior design projects (his home designed for art lovers in Glasgow, interior design of Glasgow Art Institute, Glasgow Hill Family House and the famous Liu Yang Tea Room, etc.). )

(4) Evaluation: ① He explored what he called the "old spirit" and designed novel and unique architecture, interior design and products, paving the way for modernist design in the 20th century, especially the Glasgow Art Institute he designed is a concentrated expression of his style characteristics. His exploration laid a possible foundation for mechanization, batch and industrialization. Therefore, it can be said that MacIntosh is a key transitional figure connecting the handicraft movement such as Art Nouveau and the modernist movement, and his exploration has been further developed in the Austrian separatist and German youth design movement.