The invention discloses a high-altitude automatic ground wire suspension device for a transformer substation. The high-altitude automatic ground wire suspension device comprises a transport component, a fixing component, a lifting component, a manipulator, an image recognition system and a ground wire clamp, wherein the ground wire clamp is arranged at one end of the manipulator, and clamps the ground wire to carry out assembly or disassembly operation; the other end of the manipulator is connected with the lifting component; the lifting component is fixed to the upper surface of the transport component and drives the manipulator to move up and down; the image recognition system is arranged on the manipulator, recognizes a ground wire suspension point at the height and transmits an image to the ground for an operator for examining; and the fixing component is connected to the transport component, and is used for fixing the transport component and preventing the transport component from moving. According to the high-altitude automatic ground wire suspension device, the workload of the operator is relieved; the efficiency of assembly or disassembly operation for the ground wire is improved; and the safety during the operation is improved.