Civil engineering supporting device

The utility model provides a civil engineering supporting device, which relates to the technical field of civil engineering and comprises a column main body, a fixing component is arranged on the periphery of the column main body, a supporting column is arranged in the column main body in an extending manner, an adjusting mechanism is arranged at the top of the supporting column and comprises a supporting plate, and the supporting plate is arranged on the supporting plate. Two auxiliary plates are symmetrically arranged at a groove in the top of the supporting plate, moving assemblies are arranged in the supporting plate and located at the bottoms of the auxiliary plates, connecting assemblies are arranged on the sides, away from each other, of the bottoms of the auxiliary plates, and auxiliary assemblies are correspondingly arranged on the sides, away from the auxiliary plates, of the connecting assemblies and located in the supporting columns; by means of the design, the supporting area of the top of the co