Mi Fei's calligraphy is elegant, quaint, diligent, widely circulated and far-reaching, ranking second to none among the "Four Great Calligraphers of Northern Song Dynasty". Kang Youwei once said: "Tang Yan structure, Song Shang is interesting." Aside from Su Dongpo's position as a scholar, Mi Fei has the deepest traditional skill in calligraphy, especially in running script.
Su Dongpo himself said: "Mi Fei is fascinated." He also said, "Haiyue was born with seal, official, truth, action, cursive script, wind and horse. When you are parallel to Zhong Wang, dive and be happy. Not only worth it. "
Mi Fei's calligraphy had a far-reaching influence, especially in the late Ming Dynasty, when there were many literati, such as Wen Zhiming, Zhu Yunming, Chen Chun, Xu Wei, Wang Juesi, Fu Shan and so on, and this influence has continued to this day.