Duan Yucai's A Philological Study of Shi-Jing (the Book of Songs) represents one form of the Qian-Jia Textual criticism approach in the Shi-Jing Studies in Qing Dynasty. His itinerary in the textual correction and explanation of Shi-Jing is worthy of being treated as an exemplary demonstration. This paper aims merely to illustrate his respectable attitude and achievements in this domain by focusing on his arguments and judgments on three of the problematic sentences in Shi-Jing: 'her head like that of a small cicada and eyebrows like that of a moth,' 'singing songs to notify,' 'crossing deep water without the ends of axles being wet.