Supporting device with high firmness

The utility model relates to the technical field of supporting devices, in particular to a high-firmness supporting device which comprises a bottom plate, a plurality of supporting cylinders are fixedly connected to the upper surface of the bottom plate, supporting rods are slidably connected to the interiors of the supporting cylinders, and a supporting plate is arranged at the top ends of the supporting rods. Two moving rods are slidably connected into the supporting plate, connecting assemblies are arranged in the two moving rods, and a first stabilizing plate and a second stabilizing plate are arranged at one ends of the connecting assemblies correspondingly. According to the supporting device, the bottom plate, the supporting cylinders, the supporting rods, the supporting plate, the moving rods, the first stabilizing plate, the second stabilizing plate, the connecting assemblies, the fastening assemblies and the supporting assemblies are used in cooperation, so that an object or equipment can be convenie