1. CONTENTS (1) RESEARCH OBJECTIVES Yanggiron(陽氣論) in Fengshuijiri had formed the subbase thought system in our race, and had deep influence upon selecting the community location after he unified Silla, and upon the foundation and the capital location of Goryeo and Joseon, To apply Yanggiron to new-tow development for nature-friendly city development, the purpose of this study aims to analyze Fengshuijiri-based location in the scheduled new town development site of Dongtan 2 District. (2) RESEARCH METHOD It tries to theoretically explore how Yanggi theory in Fengshuijiri will be able to be applied to modernly urban location, and analyzes Fengshuijiri-based location in new-town development area of Dongtan 2 District based on its theory. As for the analysis of Fengshuijiri-based location, it surveys the whole area, segments in by region, and then analyzes with the shape in the surrounding mountain and river and with the harmony in yin and yang. (3) RESEARCH FINDINGS Dongtan 2 District in the geomantic topography of the situation that is divided largely into 4 region by having Mt. Mubong as Geomantic guardian mountain. North, east, and south in each region are encircled by mountainous districts. The inside comprises plain and hilly districts. Thus, in was confirmed to be proper region as a ground that a city will be located, through analyzing Fengshuijiri-based analysis such as shape in mountain and river. 2. RESULTS The results of this study in expected to likely contribute to constructing eco-friendly city where is appropriately harmonized by development and preservation.