The artistic value of Preface to Lanting is not only reflected in its exquisite pen and ink skills and complete composition, but also in the profundity of cultural and emotional expression integrated with the author. Preface to Lanting possesses all the aesthetic factors of calligraphy from calligrapher, calligraphy, content and form. Under the ideological and cultural background of metaphysics in Wei and Jin Dynasties, scholars' comments, scholars' appreciation of algae, and the collapse of Confucian classics in Han Dynasty, Preface to Lanting, as the "first running book in the world", completely got rid of the sub-artistic position of calligraphy attached to words and serving decoration for thousands of years and became the best classic to express personality, poetic feelings and humanistic value choices. Wang Xizhi, who was revered as a "book saint" by later generations, shocked people with his genius-like artistic creativity, showing his lofty self-esteem, arrogant personality charm and broad-minded feelings beyond life and death.