Abstract: What dose folk custom mean to literature? This core issue of the literary folklore has not been deeply discussed by now. In order to discuss the significance of folk custom to literature, we must understand the meaning of folk custom to contemporary life and figure out the essence of folk custom. As inherited culture of human life, folk custom originally is the legal resource of daily life. Externally, folk custom is a distinguishing feature of a special existence of life; internally, folk custom is a symbol of community identity. Only if a writer grasps the connation of folk custom, he or she is able to create excellent literary folklore works.