The study scope includes “Fansu Liukao” (番俗六考) and “Fansu Zazi” (番俗雜記) from “Taihai Shichalu” (臺海使槎錄). An overall discussion of Fansu Liukao and Fansu Zazi that were written by Huang Shujiang 黃叔璥 was conducted. It pointed out its related content and writing style as well as the motivation, purpose, attitude, applied method and information sources of Huang Shujiang. Furthermore, the described marriage system in Fansu Liukao was analyzed; a comparison between choosing spouse, living principle and marriage sanction in each tribe was listed. It described the marriage system of Pingpu Tribe in the end of the 17 (superscript th) century and recognized the diversity of their social structure and the social and cultural relationship among tribes after comparing the marriage system. Its historical value was revealed in the study. Two contributions of Fansu Liukao and Fansu Zazi were reached upon focusing on the study of Pingpu Tribe; there are the establishment of study scope and the study outset. All show the academic contributions of the Pingpu Tribe.