英文摘要:The thesis is about Tung-shih. It’s in Taichung County. The main topic of this dissertation is to probe settlement and commercial streets development in Tung-shih during different historical periods. The research is made by collecting documents, analyzing statistics, and investigating fields. I aim at finding out the different characteristics existing in different periods in Tung-shih, and the critical factors behind the scenes resulting in the change. The research periods is from 18 century to now, which later I divide into three parts. The develop of Tung-Shih is great influenced by it’s position. And it also changed the policy in different period. In the Ching-Dynasty, because of the great needs of woods to build warships, the government built a military factory in Tung-Shih where was away from the living boundary. And brought many carpenters to there, so it formed the first settlement in Tung-Shih named Jiang-Liao, it means the house of carpenters. During the Japan-governed period, because Tung-Shih was located in the middle of the mountain area and the plain, so no matter hewed the woods or appeased the Indigenous Peoples in the mountain area, Tung-Shih’s location was very important. During this period, Tung-Shih became the administrative and commercial center of vicinal areas. After the WWII, because the built of the Central Cross-Island Highway and the develop of the Ta Hsueh Shan forestry, Tung-Shih became the entrance of the Central Cross-Island Highway and the important forestry center of the nation. This period is the most prosperous times in Tung-Shih. But after all the other projects established by the KMT Government were completed and the close of the Ta Hsueh Shan forestry Corporation, Tung-Shih lost it’s superior in location. So the major economic activity in Tung-Shih was changed from commerce to agriculture. Because the lack of itself economical resources, Tung-Shih lacks condition of the introduction non-native population, the population outflow is serious. After the 921 earthquake, the commercial activity in Tung-Shih was decline slowly. In the develop of commercial streets, Tung-Shih was great influenced by the terrain. Because within the boundaries the knoll fluctuation, belongs to middle Taiwan the typical mountainous region rough terrain, only has the minority flat land to the Tachia River east bank coast river step, is the entire town resides collectively the scale biggest neighbor area. If looked by the historical angle, Tung-Shih had different looks in different period. Like Jiang-Liao during Ching-Dynasty, main street in Japan-governed period, Feng-Shih Road after WW II, San-Ming Street in the 70’s, and the Zhong-Zheng Road develop in 80’s. If looked by the terrain, the development of Tung-Shih is upward develops along the river step unceasing first order first order, from the initial period west Tachia River bank, gradually develops toward the near mountain East, presents the north and south belt-shaped long shape settlement shape.