From September 12,2014 to October 31,2014,the Shanxi reservoir on the boundary zone of Wencheng-Taishun,Zhejiang Province had an earthquake swarm with the largest earthquake of M4.2. In 2002 and 2006,a M_L3.9 and a M_L 4.6 earthquake sequence occurred in the area. Influenced by previous 2 seismic activities,houses in the earthquake disaster area had suffered some damage. Through site survey of 2014 earthquake,we found the earthquake with M4.2 generated obviously seisesthesia in the region. Housing damage is more common,and the earthquake damage has the superposition effect,and there is a smaller-earthquakes-but-larger-damages effect. In addition,on some road slopes near the epicenter,the earthquakes also triggered smaller collapses,landslides and other geological hazards.