The invention relates to a special handle operating tool for an ultrahigh-frequency partial discharge sensor, which comprises a second insulating handheld rod, wherein the upper end of the second insulating handheld rod is provided with a first insulating handheld rod, the upper end of the first insulating handheld rod is provided with an aluminum supporting guide rail, the inner side of the aluminum supporting guide rail is provided with a supporting polished shaft, and the supporting polished shaft is provided with a sliding block. In the invention, the device is adopted in ultrahigh-frequency partial discharge detection, people does not need to climb high, the device can be flexibly used in places with the position being restricted, the time and labor are saved, and the danger of getting an electric shock is avoided. The supporting polished shaft of the special handle operating tool is U-shaped, so that a sensor tray can be kept to face towards an insulating basin of GIS combined electrical equipment when the sliding block and a sensor tray change the position, and thus the measurement accuracy of the sensor tray is greatly improved.