Recent advances in microsensor technology have led to the quick development and large-scale deployment of low cost and low power sensing devices with computational and wireless sensing and communication capabilities. Current works consider wireless sensor networks are focusing on specific application. But for such applications, wireless sensor networks (WSNs) can not operate as stand-alone networks; there must be an effective way for user to gain access to the data produced by the wireless sensor networks. At the same time, it is envisioned that WSN will to be pervasive and ubiquitous. It makes a lot of sense to integrate WSNs with Internet. Some crucial issues are discussed in the article. In the paper, a service-oriented model with application agent, resource manager, register agent, and multi-gateway is designed, and its components have been illustrated. With our architecture, it can put the required data as close as possible to the users and filter data as close as the source. From the simulation results about load balancing and delay time, we can get that it performs well in flexible and reliable for different applications and can easy connect with different protocols used for WSNs.