Abstract: A network transformer, including a housing and a partition member, wherein, the housing defines a chamber therein, a plurality of external pins are provided at edge of the housing, the partition member is mounted in the chamber and divides the chamber into two spaces, in each of which a plurality of magnetic cores are mounted, the magnetic core is winded at least with a coil, and the external pin is connected to the ends of the coil. The network transformer can improve insulating effect and anti-interference capability between internal channels, and be conducive to make the most use of the product space.