Disaster management projects are inseparable for the sustainable development of a any nation. GIS is a powerful tool for such projects. A well-designed disaster mitigation and preparedness programme is certainly a very effective tool in reducing the effects from an earthquake disaster. This study is for the Seismic Microzonation of Coimbatore district. "How to develop a Seismic Microzonation map?" The main objective of this study is to develop the Seismic Microzonation map. Seismic Microzonation falls into the category of "Applied research". Very preliminary process of reducing the effects of earthquake is by assessing the hazard itself. GIS is a very powerful tool for handling and processing of spatial and non-spatial data. The district has been divided in to 5 zones such as very high, high, moderate, less moderate and least based on the possible threat to earthquakes. The vulnerability of the major locations is reported.