Bracket structure for controlling settlement of underground building

The utility model provides a bracket structure for controlling settlement of an underground building. The bracket structure is arranged on an envelop enclosure of a foundation pit dug for building the underground building, and comprises a plurality of brackets for supporting a major structure of the underground building; the brackets are arranged on the inner side of a wall body of the envelop enclosure in a straight-line mode and extend in the extending direction of the envelop enclosure; the brackets support a base plate of the major structure of the underground building through a supporting face and are fixed to the envelop enclosure through a fixing face, and therefore the bracket structure can sufficiently use the vertical bearing force of the envelop enclosure, deformation of the major structure is reduced, the absolute settlement and the differential settlement of the major structure are reduced, and the safety of the major structure is accordingly improved.