The invention relates to a protocol converter for unified management and control of an intelligent power distribution terminal. The protocol converter has a main function of converting the protocol of each communication interface of the intelligent power distribution terminal to an openflow protocol form, thereby using for unified management and control of a software-defined power distribution network. The protocol converter successively comprises an input interface module, an input communication module, an embedded minimum system, an output communication module and an output interface module. The input interface module and the output interface module are respectively a physical connector and a transceiver which are respectively connected with data transmitting equipment and data receiving equipment. The input communication module and the output communication module comprise controllers which correspond with the data transmitting equipment and the data receiving equipment and corresponding equipment driving programs. The data transmitting equipment is connected with the embedded minimum system through the input interface module and the input communication module. The embedded minimum system finishes protocol format conversion.