The invention relates to an infrared temperature measurement technology-based local overheat fault simulation device for a GIS. The infrared temperature measurement technology-based local overheat fault simulation device comprises a DC power supply, a solid-state relay, an overheat fault simulation element, a PID temperature controller and an infrared thermometer, wherein the overheat fault simulation element comprises a cylinder block, a heating body, a heating body temperature sensor, a temperature sensor binding post, a heating body binding post, a vacuum pump, a vacuum pump ball valve, a basin-type insulator, a shielding case and an air inlet ball valve. A local overheat fault in SF6 gas insulated electric equipment can be accurately simulated. Aluminum or electrolytic copper is selected as the material of the heating body, so that the material of the SF6 gas insulated electric equipment can be really simulated. The detachable shielding case arranged outside the heating body and the basin-type insulator at the upper part are capable of accurately simulating the button contact heating condition in the shielding case in the SF6 gas insulated electric equipment, thereby further improving the simulation accuracy and precision.