The utility model discloses a temperature measuring device for main current guide equipment in a high-voltage switch cabinet. wherein a diversion bus is arranged in the high-voltage switch cabinet, the diversion bus is connected with a cable outgoing line through a handcart switch, the temperature measuring device comprises an infrared thermometer and a display control terminal, the infrared thermometer is fixed in the switch cabinet, the display control terminal is arranged on the outer wall of the high-voltage switch cabinet, and the infrared thermometer is electrically connected with the display control terminal. According to the technical scheme, the temperature value of the main current guide part can be checked at any time, the high-temperature phenomenon of high-voltage equipment ofa transformer substation can be found as soon as possible, and user power supply interruption or whole-station voltage loss and other consequences caused by heating of the high-voltage equipment of the transformer substation are avoided.