Building ground leveling device

The invention relates to the technical field of ground leveling, in particular to a building ground leveling device which comprises a leveling plate and two sets of supporting bases, the two sets of supporting bases are located at the two ends of the leveling plate correspondingly, horizontal guide rails are arranged on the two sets of supporting bases correspondingly, and sliding blocks are arranged on the horizontal guide rails in a sliding mode. The sliding blocks slide in the length direction of the horizontal guide rail, the leveling plate is connected between the two sliding blocks, a first adjusting piece used for adjusting the height of the horizontal guide rail is arranged on the supporting base, a communicating pipe is arranged on the leveling plate, the two ends of the communicating pipe are communicated with display pipes respectively, and the display pipes are transparent hoses. The two display pipes and the communicating pipe are arranged in a U shape, and a second adjusting piece used for adjus