The invention discloses a tile paving and pasting mechanical device used for building wall construction and belongs to the technical field of building construction. The problems that during pile paving, paving manual work is needed for paving, time and labor are wasted, efficiency is low, and the force is hard to master are solved. The tile paving and pasting mechanical device is technically characterized by comprising a tile paving and pasting frame and a tile paving and pasting jig. The tile paving and pasting jig comprises an installation seat, a fixing frame, a tile adsorption frame and asucker, the tile paving and pasting jig is installed on a paving and pasting mechanical arm of the tile paving and pasting frame, the sucker on the tile adsorption frame is used for adsorbing a tile and pasting the tile to the wall face, an air valve on a suction pipe is opened, the gas pressure recovers to the normal pressure state, the sucker is separated from the tile, and the tile paving and pasting operation is completed. The construction operation of tile paving and pasting can be conducted on the building wall conveniently, the paving force can also be accurately mastered conveniently,and the phenomenon that force applying is insufficient or force applying is too large is avoided.