The present study investigated Korea’s urban regeneration project which combined social-economicenvironmental regeneration and the efficiency of this project on the development of a green city. The study selected urban micro climate, which is closely related to urban public health and amenity, and analyzed the climate with cold wind speed as specified evaluation item to assess and compare its characteristics before and after the urban regeneration project. The result of analysis revealed the preferential need for a comprehensive plan which can reflect territorial and natural characteristics of a target area and its surroundings as they were found to be the base for a green city project. We concluded that a plan which adequately accounts for previously known conditions and combines additional ecofriendly methodologies can further promote green city projects and enhance the success of the relevant urban development projects.