This book advances the study of Chinese folk songs through theoretical innovation in literature-based folk songs and methodological innovation in multidisciplinary cross-interaction. It describes the historical development of folk songs, makes an in-depth study of the intersection and integration of folk songs with other literature and art, as well as the relationship with merchants, folk customs and regional culture, and analyses the literature of folk songs in previous dynasties. It is not only significant for the preservation of cultural heritage, but also to the promotion of folk song research and related fields. This book is applicable to scholars and researchers who have in-depth research on Chinese folk songs.