The invention discloses a tiled loading block and a loading mechanism thereof. The tiled loading block is formed by loading pieces in a stacking mode, the upper surfaces and the lower surfaces of the loading pieces are correspondingly provided with positioning pins and positioning grooves, U-shaped channels are arranged in the middles of the loading pieces. Circular through holes with threads are arranged in the U-shaped channels, the circular through holes can be selected to be meshed with a plunger locking mechanism to limit the loading pieces. The loading mechanism comprises a base, a guide column, a supporting frame, an upper cover and a hook, the base, the supporting frame and the upper cover are used for fixing and supporting the loading block, the guide column penetrate through the middles of the U-shaped channels of the loading pieces, and the loading pieces are integrally in series connection. The combining portion of the guide column and the uppermost layer loading piece is provided with a locking nut, and the positions of the loading pieces are prevented from being deflected. The tiled loading block and the loading mechanism thereof solve the problems that an existing ballasting mechanism is complex in mounting, low in efficiency and high in dangerousness are solved, and have the advantages of being easy to manufacture, low in production cost, easy and convenient to mount, high in efficiency, safe and reliable.