Low multi-layer assembly type heat preservation and energy saving building

The utility model discloses a low multi-layer assembly type heat preservation and energy saving building, relates to the technical field of assembly type buildings, and solves the problem that adjacent walls are fixed only through transverse connecting pieces, and the connecting strength is low. The low multi-layer assembly type heat preservation and energy saving building comprises a first wall body and a second wall body which are arranged side by side, and a groove is formed in the side, close to the second wall body, of the first wall body; and a screw rod is rotationally installed on the inner side wall of the groove, one side of the screw rod is connected with a driving assembly, the end, close to the second wall body, of the screw rod is in threaded connection with a clamping block, and a clamping groove matched with the clamping block is formed in the side, close to the first wall body, of the second wall body. Through the arrangement of the screw rod, the driving assembly, the clamping block and the