The invention discloses a high-altitude rigid busbar ground wire installing device which is formed by a pair of wiring pliers, a wire pressing tongue plate, an outer operating rod upper section, an outer operating rod lower section, an inner operating rod upper section, an operating rod lower section and a quick connector. The quick connector is composed of an upper inner rod connector, a lower inner rod connector, an upper outer rod connector, a lower outer rod connector and a hoop capable of moving in the axial direction. The inner operating rod upper section and the operating rod lower section which are positioned inside and the outer operating rod upper section and the outer operating rod lower section which are both positioned outside are simultaneously combined into an integrated body through the quick connector. The outer operating rod lower section is provided with a rubber handle, and the inner operating rod lower section is provided with a tightening handle. Due to the fact that an inner rod, an outer rod and an upper and lower segmentation combination scheme are adopted, the quick connector is used, existing single rod operation is modified into inner rod and outer rod operation, and working efficiency and overhauling safety are improved.