LED advertising board supporting device

The utility model relates to an LED billboard supporting device, and relates to the technical field of LED billboards, the LED billboard supporting device comprises a supporting frame and a stabilizing mechanism arranged on the supporting frame, the stabilizing mechanism comprises a bearing disc and a suction cup which are detachably arranged on the supporting frame through a connecting assembly, the connecting assembly comprises a connecting rod and a connecting screw rod, and the supporting frame is in threaded connection with a positioning screw rod; and the sucking disc is arranged on the positioning screw rod. The supporting frame is supported on the ground, the connecting rod is clamped and installed on the supporting frame, the connecting screw is rotated to position the connecting rod, so that the bearing disc is installed on the supporting frame, the weight of the supporting frame is increased, meanwhile, the positioning screw is screwed to enable air in the suction cup to be extruded and then discha