||Geng-Liao District, an area far from the center of Wu-Gu Township, located at the borders of San-Chung, Sin-Jhuang, and Lu-Zhou, includes the villages of Geng-Liao, Sing-Jhen, Jhu-Hua, and Jhou-Hou before the construction of the Erchong Floodway. The Floodway’s construction caused a change in the district’s education, religion, and society. Such a district that has experienced birth, growth, change, extinction, rebirth and so on attracts people to deliberate its history. This research mainly analyses documents and rearranges information about the district’s history, plus interviews of local elders and administrative officers, to investigate this area’s development. In this article, the history of Geng-Liao District is divided into three parts: The periods during the rules of Qing Dynasty, during the colonization of Japan, and after World War II to survey the related historical record. After this is a study of the affects of the Erchong Floodway toward the local education, religion, and way of life in Geng-Liao. The affects toward Geng-Liao Elementary School and the region around the old campus is shown by the structure and running of the school, the changes of temples: Fuan temple, Singjhen temple, Fusing temple, and Fude temple, and the development of Gengsin community and Singjhen community. The local past and history are usually viewed as a natural existent, but it fades away with time. The composition rebuilds some the past of Geng-Liao District was done, also examines the presents and hopes for a better development in the future.