Abstract: Confucianism Studies in Song-and-Yuan Dynasties edited in early Qing Dynasty by Huang Zongxi in his old age remained unfinished.He presented the history of Song-and-Yuan Confucianism from the perspective of new Confucianism, covering 31 studies and including tens of notes about new Confucian scholars' tenets of academic research and their discussion about problems for Confucianism study.This draft, amplified by his second son, Huang Baijia, was regarded as the "source text by Huang Zongxi".Then, re-edited and amplified by Quan Zuwang, it became the one-hundred-volume Studies in Song-and-Yuan Dynasties known by us readers today.Contrary to Huang's original practice, Quan didn't take the new Confucianism as the core conception for the amplified text, which made the material in the book miscellaneously scattered and greatly lower the original academic quality.Therefore, it's important for researchers of Chinese academic history to restore the "source text by Huang Zongxi"on the basis of his original conceptions and style.