Building energy-saving plate with heat preservation structure

The utility model relates to the technical field of building boards, in particular to a building energy-saving board with a heat preservation structure, which comprises a board body and a dismounting accessory, a fixing groove is arranged on one side of the board body, square grooves are arranged on two sides in the fixing groove, a through hole is arranged on one side in each square groove, a fixing block is fixedly arranged on one side of the board body, and the dismounting accessory is arranged on the other side of the board body. Clamping grooves are formed in the two ends of the fixing block correspondingly, fixing mechanisms are fixedly arranged in the clamping grooves, and butt joint mechanisms are arranged at the top end and the bottom end of the plate body correspondingly. The upper end and the lower end of the frame plate are respectively provided with a plurality of positioning blocks and positioning grooves, and the positioning blocks are meshed with the positioning grooves, so that the composite