The utility model discloses a control cabinet for gas fire-extinguishing startup discs in a direct-current converter station. The control cabinet comprises a cabinet body, a terminal row and an air switch row which are mounted at the left part of the cabinet body, a plurality of gas fire-extinguishing startup discs mounted at the middle part of the cabinet body, and a fire alarm control disc mounted at the right part of the cabinet body, wherein the input ends of the air switches in the air switch row are connected with the inferiors of output ports corresponding to the terminal row through a first conducting wire group; input ports of the terminal row are used for being connected with a power supply; the power source end of each gas fire-extinguishing startup disc is connected with the interior of the output end of the corresponding air switch in the air switch row through a second conducting wire group; the power source end of the fire alarm control disc is connected with the interior of the output end of the corresponding air switch in the air switch row through a third conducting wire group. According to the control cabinet, the gas fire-extinguishing startup discs are integrated together, so that the installation cost of the gas fire-extinguishing startup discs is reduced while field operating maintenance is facilitated.