This book is the representative work of the British artist and illustrator Walter Crane, collecting a series of introductory lectures on design he made for students when he was the Dean of the Manchester School of Art. The content covers the foundation of art design, practical basis, material influence, symbolic and emblematic elements, graphic impact, naturalism, and other topics. Crane pointed out that modern commercial competition has led to the specialization of every branch of design, and as designers, the most important thing is to keep in mind the real basic connection and essential unity of art, paying attention to both design and art itself, as well as the humanistic spirit and commercial spirit in design, otherwise design will become mechanized and narrow-minded. This book sorts out the development of art design, introduces diversified art design in different historical periods, including a large number of decorative designs for public and private buildings and furniture, and is accompanied by a large number of exquisite pen-and-ink design drawings, which are very beneficial to readers.