The invention belongs to the field of electric power transportation, and particularly relates to a gas cylinder transporting trolley for a power grid. The gas cylinder transporting trolley comprises an L-shaped frame body, a rotating driving device, a stay wire, a holding clamp and a rotary plate. The rotating driving device is arranged at the vertical part of the frame body. The output part of the rotating driving device is connected with one end of the stay wire. The other end of the stay wire is connected with the holding clamp. The bottom of the frame body is provided with an opening. Therotary plate is located in the opening and is connected with the bottom of the frame body through rotating shafts on the two sides of the rotary plate. The bottom surface of the bottom of the frame body is provided with casters. The gas cylinder transporting trolley can automatically erect a gas cylinder toppled down to the ground and can carry the gas cylinder directly to the trolley while the gas cylinder is erected; and the gas cylinder transporting trolley is ingenious in structure, convenient to operate, safe and reliable.