Primary discourse of folk-literature means: description of the truth for folk-literature which includes noumenon、category、methodology. In this dissertation, they would be picked up with key words or nucleus conceptions. In my dissertation, discourse is the main method. The main contents include the emergence、development、transformation、wilderment of primary discourse and its change mechanism. There are five chapters in all in this dissertation: Chapter 1 is the naissance period. Here from Huang Zunxian、Liang Qichao to Hu Shi、Zhou zuoren, their literary conception bring about the naissance of the folk-literature. At the very beginning, "folk-literature" is "literature". Chapter 2 is the development period. Here scholars go deep into the theory of folk-literature thus make folk-literature to be a subject which separate from the literature. On the other hand, The field of scholarship dealing with the systematic collection and study of myths、ballads、folktales, make variance of text be clear, and the methodology be summed up according it. Chapter 3 is the transformation period. Chinese-Japanese war is the background. Here folk-literature is the materials to anthropology, or come to be light literature, or just to be the literature form but is movement that relate the Communist Party and the mass. The primary discourse of folk-literature is changed. Chapter 4 is the wilderment period. The war between Kuomintang and Communist Party, and the People's Republic of China come into existence are the background. Here "class" and "dumb millions" are the primary discourse of folk-literature. Thus folk-literature and dumb millions literature are a confusion in that time. Folk-literature come back to its beginning, those noumenon、category、methodology which had stirred in the half part of 20 century, now become to be blurry shadow. Chapter 5 is the conclusion of this dissertation. First, summarize all the contents, second, conclude the inside and outside change mechanism, third, reflect the folk Literary Scholarship nowadays and advanced three ideas in order to promote the development of folk Literary Scholarship.