Electric connector

The utility model relates to an electric connector, which is electrically connected to a main circuit board. The electric connector comprises an insulating body and a signal processing module, wherein the insulating body is provided with a first interface; the signal processing module is arranged in the insulating body and provided with a sub-circuit board; the sub-circuit board is provided with an input end and an output end, and the signal is inputted to the sub-circuit board through the input end and is outputted to the main circuit board through the output end; on the sub-circuit board, at least one first common-mode rejection module is connected with the input end, at least one transformer module is connected with the first common-mode rejection module, and the signal is transmitted to at least one second common-mode rejection module which is connected with the output end. The electric connector can avoid generating the high-frequency wave which interferes with other electrical equipment and also avoid t