Video surveillance system develops gradually from the traditional analog system to digital technology and network system. In recent years, the evolution direction tends to be opener and more intelligent. And then, the technology of intelligent analysis evolves from central management system to front-end equipment. Therefore, intelligent network camera has become a rising star. In this paper, we will explain the promotional direction of high quality affordable intelligent network camera system through the data collections of the current situation of intelligent network cameras. And then, we develop design reference of high quality affordable intelligent network camera system on SoC-based platform including the specifications of the hardware platform, video analysis software functional specifications, and perform system design based on ONVIF standard. Finally, we build the application through the practical case to verify the feasibility of intelligent network cameras.