The utility model provides a connector case for mining. The connector case for the mining comprises a case body, a power supply unit and a signal converting unit. The power supply unit comprises a transformer, an alternating current (AC)/direct current (DC) module and an intrinsic safety power module, wherein the transformer, the AC/DC module and the intrinsic safety power module are fixedly arranged on the plate wall of the case body. The signal converting unit comprises a 485-Ethernet conversion module, a video server module, a controller area network (CAN)-Ethernet module, a photovoltaic conversion module and an Ethernet-very-high-bit-rate digital subscriber loop (VDSL) conversion module, wherein the 485-Ethernet conversion module, the video server module, the CAN-Ethernet module, the photovoltaic conversion module and the Ethernet-VDSL conversion module are fixedly arranged on one identical support plate. Two ends of the support plate are fixedly arranged on the plate walls of two sides of the base body. The power supply unit can output alternating current power supply of 36 V for lighting and direct current intrinsic safety power supply of 18 V for the signal converting unit at the same time. The connector case for the mining can achieve that multiple signals are input at the same time and are output in a centralized mode after being converted in an underground operation environment, can be carried forwards conveniently along with a working plane, saves time, labor and cost, meanwhile provides lighting power supply of the alternating current of 36 V, and enables on-site lighting power to be obtained conveniently at underground movable working points.