Abstract: Earthquake Administration of Tianjin Municipality constructed Virtual network of bohai sea in the period the eleventh five-year plan.Application of this virtualnetworktechniquein Tianjin was introduced including systemdeployment,operation monitoring,information diffusion and system maintenance. Furthermore,JAVA imagecutting technology was used to display towns' epicenter in earthquake rapid report work.The completion of the network,not only improved the monitoring ability and research level of the digital seismic network in tianjin on the bohai sea earthquake,but alsoprovidesopportunity for improing monitor and forecasting system,enhancing its influence in the presence of sociaty in each counties earthquake mechanism.