Based on the seismographic network monitoring data and field investigation, the characteristics and damage of the Ms4.9 earthquake at the boundary zone of Gaoyou and Baoying, Jiangsu Province on July 20, 2012 have been introduced. The results of focal mechanism solution have been obtained by CAP method. According to the regional geological structure data and field investigation, the occurrence of the earthquake is probably related to the Yangchacang-Sangshutou fault. According to relation of buildings damage and earthquake responses of people and objects, the evaluation criterion of earthquake intensity suitable for this area has been drawn, and the earthquake intensity distribution has been illustrated. The earthquake damage characteristics of brick-concrete structure and brick-wood structure buildings have been analyzed and the main reasons of building damag variegated rivers areas, e have been summarized, such as low bearing capacity of foundation in poor anti-quake capacity, poor quality of construction and poor maintenance of buildings. Based on the regional differences of earthquake damage, the suggestions on new rural construction, capacity improvement of projection against earthquake disasters and researches on seismic tectonic zone of moderate and strong earthquakes have also been proposed.[著者文摘]