This thesis based on Dan-Xin dang’an mainly and delimited Miaoli District in Ch’ing Dynasty — Zhunan second, third and fourth townships (bao). It discusses the constitution, the alteration, the development background and the effect between each of the town organizations in Miaoli. In addition to, it compares the development differences between coastal and mountain market towns of Miaoli for demonstrating the characters of local society.