Satellite station feed source component

The invention relates to a satellite station feed source component comprising a main body cavity and a cover plate which is connected with the main body cavity. The main body cavity is provided with a public port, a waveguide group, an emission port, a coupling window and two feed holes. The two feed holes are connected via a waveguide transmission line. The cover plate is provided with a filter cavity. An emission channel of the satellite feed source component is formed by the public port, the waveguide group and the emission port. A receiving channel of the satellite feed source component is formed by the public port, the waveguide group, the coupling window, the filer cavity, the first feed hole, the waveguide transmission line and the second feed hole. According to the satellite station feed source component, the main body cavity is formed by integral processing and connected with the cover plate with the filter cavity in an abutting way, and receiving and emission high isolation transmission of microwave radio frequency signals is realized so that the whole feed source component is simplified in structure and compact in volume, and a waterproof function can be realized and thus product reliability is greatly enhanced.