Zhang Jizhi inherited his uncle Zhang Xiaoxiang's calligraphy style, later learned from Ou Yangxun, Yu Shinan and Yan Zhenqing, and borrowed from Mi Fei's writing style, especially good at regular script. Its big characters are simple and vigorous, the small characters are elegant and handsome, and the brushwork is round and vigorous. At the same time, it has a brushwork of official script different from that of northern Song Sijia. Calligraphy was very famous at that time, and Jin people spent a lot of money to collect his Mo Bao. Zhang Jizhi also "takes calligraphy as Buddhism" and wrote many Buddhist scriptures in his life. Admirers praised him for his amazing skills, which were quite rare among Song people, because of his strict method of opening scripts, all the words in Buddhist temples and his innovative brushwork. Critics think it is angry and unfamiliar with its carving.
Handed down from ancient times, there are Huayan Sutra, Diamond Sutra, Buddhist Legacy Sutra, Du Fu, Wang Bao Ben An Ji, Du Fu's Play as Two Pines, Shang Wen Tie and Tai Ci Tie.