The technology of integrated information portal is one of the solutions to the information silo. The portal based on special markets is received more attention. This paper introduces the portal, the features and the development of information portal. A functional structure of the portal information systems for E-business is given by using the technology of society and the concept and methodology of comprehensive integrated system. An example of system module based on Google App Engine also be shown. At last, the importance of system model for integrated information portal based on cloud platform had been discussed.