Abstract: The buildings in intensity Ⅴ-Ⅶ areas of the Tangshan M5.1 and M5.3 earthquakes occurred on 29 and 30 of 1991 in the west of Guyie were investigated by sampling investigation and key investigation methods.According to the damage degree of the buildings and structures, the buildings and structures are divided into 5 grades, serious damage, mediumgrade damage, slight damage, very slight damage, and basically undamaged.The economic losses caused y this earthquake are estimated according to the dam-age rate, loss ratio obtained by statistics, the recent unit price of the buildings and the total number of buildings in various intensity areas.