Disclosed is a GIS cable terminal installation handcart. A handcart frame comprises two vertical rails symmetrically fixed to the two sides of the back part of a base. The front end of the bottom part of the base is provided with a rotating wheel, and the back end of the bottom part of the base is provided with a brake universal wheel. A foot-operated hydraulic mechanism mainly comprises a hydraulic cylinder, a piston rod and a foot-operated hydraulic valve, and is vertically and upward disposed at the center of the back part of the base. The bottom part of the hydraulic cylinder is fixed to the base. The extension end of the piston rod is fixed to two elevating wheels. One end of a chain is fixed to the hydraulic cylinder, and the other end of a chain is fixed to an elevating platform through the elevating wheel. The front end of the elevating platform is provided with two symmetrical clamp arms. The back end of the elevating platform is disposed on a vertical rail through a guiding rotating wheel. A support platform used for supporting a GIS cable terminal is disposed between the two symmetrical clamp arms. The GIS cable terminal installation handcart enables auxiliary installation of GIS equipment high voltage cable terminal in a flexible, convenient and manpower-saving manner, and effectively improves reliability and installation efficiency of the GIS equipment.