There are various forms of Chinese calligraphy styles and the evolution of Chinese font is a long and tortuous process. As a font style that serves as a link between past and future, official script is of great significance in the evolution of Chinese calligraphic font, which can be divided into ancient official script and Han official script. After a long and continuous process of simplification, the ancient official script became more and more mature in the widespread use of Western Han and Eastern Han Dynasties. In the period of Emperor Huan and Emperor Ling of the Eastern Han Dynasty, its practicality and artistry reached an unprecedented height. In the short decades from Qin to Han, the change of calligraphy style was rapid. While the official script gradually matured, it also gave birth to other calligraphy styles, mainly cursive script and regular script. In the history of Chinese calligraphy, the achievements of official script have two peaks, one is the period during Han Dynasty and the other is Qing Dynasty. The official script of Qing Dynasty has become a pure art form of calligraphy, which not only inherits the tradition, but also has the characteristics of the times with strong artistic vitality.