Ke Yunhan's calligraphy can be done in seal, official script, regular script, running script, and cursive script. His cursive script is especially famous in contemporary calligraphy circles. His cursive script is based on Erwang, Yan Zhenqing, Li Yong, Mi Fu, Huang Tingjian, Wang Duo, Fu Shan and Huang Daozhou, and integrates the epitaphs of the Southern and Northern Dynasties, Han Li, Zhang Xu and Huaisu cursive scripts to form its mainstream style. Whether it is a huge nave or a couplet, it has a tense and steep structure, solid and elastic lines, thick and exhausted ink colors, and dense and consistent movements and compositions, which have formed a unique artistic language that belongs only to him. On the whole, it can show boldness, grandeur, rigor and full of aura, which are the main characteristics of its "Ke Family Method". He is one of the leading figures of the neoclassical stream in contemporary calligraphy circles and has extensive influence in contemporary Chinese calligraphy circles.