Long-distance PoE power supply equipment and method

The invention discloses long-distance power over ethernet (PoE) power supply equipment and a long-distance PoE power supply method to solve the problem of limit to the distance in the conventional PoE system. The power supply equipment comprises a local power supplier, a PoE remote switch and a transmission line connected between the local power supplier and the PoE remote switch; PoE power receiving equipment is connected to the PoE remote switch through a network cable; the local power supplier is used as a conversion medium of a network signal and a first transmission signal and supplies first direct current to the PoE remote switch through the transmission line; and the PoE remote switch is used as a conversion medium of the first transmission signal and a second transmission signal, converts the first direct current into second direct current and supplies the second direct current to the PoE power receiving equipment through the network line. The first transmission signal is transmitted between the local