The invention relates to the technical field of tools of grounding conduction tests, and provides a portable double needle contact operating device for a grounding conduction test of a transformer substation. The device includes an operating shell; two inner conducting wires are disposed in the inner cavity of the operating shell; one end of the operating shell is movably provided with two contactpins; the surfaces of the two contact pins are wrapped with insulation sleeves; one end of each of the contact pins extends to the inner conducting wires to form wiring ends and is fixedly connectedto one end of each of the inner conducting wires; two fixed blocks are disposed inside the operating shell; one end of each of the two inner conducting wires is fixedly connected with one end of eachof the fixed blocks, and the other end of each of the fixed blocks is fixedly connected with outer conducting wires; and the other end of the operating shell is provided with a wire bunching structure, and the two outer conducting wires pass through the wire bunching structure and extend to the outside of the operating shell to form patch plugs. The device solves the technical problem that conventional contact operation rods are long, are inconvenient to use when the rods are carried or retracts wires, and the contact pins are fixedly installed, rotation is required to increase the contact area when the pins are used, and the work efficiency is low.