民國時期是指民國元年（1912年）至民國38年（1949年）9月中共建國為止的38年間。這時期是中國遭遇到空前巨變的時段，原本居獨佔地位的經學逐漸史學化，在民國時期的38年間，經學著作總共約有1500種，這是誰都沒有意料到的事情，在一千多個作者中，有不少不應該被遺忘的經學家，他們的著作有不少創見，可惜被埋沒了。在這些被遺忘的經學家中，有徐天璋、陳鼎忠、戴禮、張壽林、李源澄五位經學家，對經學研究有相當大的貢獻，但是久不為人所知，我們依他的生年先後，逐一加以介紹，希望對民國經學的研究風氣有所提升。

The period of Republic of China (1912~1949) saw the drastic changes in the Chinese society, and the historicization of the Confucian Classics, or the rise of historical approach of the classics. During these thirty eight years, there were about a thousand and five hundred works on Confucian Classics, which was surprisingly phenomenal. Among these one thousand and five hundred classicists, there are five authors who made certain contributions on classical studies and who should not be easily forgotten. In this paper, I would like to introduce and bring attention to the academic accomplishments of the five classicists: Xu Tianzhang, Chen Dingzhong, Dai Li. Zhang Shoulin, and Li Yuancheng. It is hoped that this paper can shed some light on the studies of Confucian Classics in the period of Republic of China.