This article aims to characterize the spatial patterns and differences of population growth at Min-Jen, Nantow County during Japanese colony. Utilizing the population data from “The Report of Taiwan Colonical Government Statistic Division”, and the division of the administrative district at that time as a unit, we have the following findings: 1. Before 1920, the population in Ba-Gua tableland was higher than other parts of this area and was about half of the total population of Min Jen area. 2. The population growth of Ba-Gua tableland slowed down in the middle and late period of Japanese colony, but the population size was still about 40 percent of the entire Min-Jen area. 3. The spatial pattern of population distribution has not changed entirely throughout the 20th century.