With the abundance and development ,the transmission of virtual instrument on Internet become the exigent need in the field of instrument .The paper summarizes the building method of running flat to the stream of virtual instrument .The authors can complete remote test,exchange the testing data,so much as establish a dynamic league for test mission through the flat . For this flat ,they bring forward own opinion of systemic framework and running environment as well as local area network building . Furthermore, the anthors set forth the realization of function of accessing to database of virtual instrument.,the layout of site homepage. Finally,they introduce how to configure the site server ,what operating system to be selected for the site server and how to deploy the whole site .