With the rapid development of remote sensing technology of the high-resolution， remote sensing technology will have a wider application in disaster relief field． The application of the high-resolution remote sensing technology to the analysis of building group vulnerabilities to seismic disasters can not only ensure the timeliness of the investigations of building types and quantity，but also help the comparative analysis of vulnerabilities and loss risks in different stages in order to reveal the changing regularity of loss risk from seismic disaster． Based on the analysis of the image characteristics of the buildings on the high-resolution remote sensing image，this paper designs a method which can be used to extract the attribute information ( including height and area of building) ． The field investigation verifies the feasibility of the method． The analysis of earthquake vulnerabilities of building groups can be done by combining the attribute information of the buildings extracted from the high-resolution image with the traditional model． The paper takes the central area of Tangshan and its nine surrounding towns in 2009 as an example，analyzing the earthquake vulnerabilities of the building groups under the condition of the scenario seismic intensity．