Flameproof and intrinsically safe mine network switch

The utility model provides a flameproof and intrinsically safe mine network switch which comprises a power supply module, a standby power supply module, a switch module, an ONU (Optical Network Unit) module and an interface conversion module. The standby power supply module, the power supply input end of the switch module, the power supply input end of the ONU module and the power supply input end of the interface conversion module are connected in parallel with the power supply output end of the power supply module. The flameproof and intrinsically safe mine network switch has a large number of various interfaces, supports flexible networking modes, overcomes the defects that the original underground switch has a small number and a few variety of interfaces and a single networking mode and also overcomes the defects that the original switch has disorderly circuits and numerous secondary equipment and is troublesome to repair and manage.