The utility model discloses a trolley for transformer substation test. The trolley comprises a carrying platform with travelling wheels. Two ends of the carrying platform are hinged with a first U-shaped frame and a second U-shaped frame respectively, a plurality of ropes are arranged on the first U-shaped frame, a plurality of rope fasteners are arranged on the second U-shaped frame, railings are arranged on the U-shaped frames, and limit pins are arranged at the hinged joints of the U-shaped frames and the carrying platform. When the trolley for transformer substation test is used, only the U-shaped frames are to be opened, the limit pins are inserted, and devices to be tested are arranged on the carrying platform and can be conveyed after fixed by the ropes and the rope fasteners, so that many devices can be transported at one time and cannot fall off during rotation. Besides, due to bendability of the ropes, even if the width of the tested devices is larger than that of the carrying platform, the carrying platform still can transport the devices, and the trolley can be stored foldably when not used.