Ceramic tile jointing device for building decoration

The utility model discloses a ceramic tile pointing device for building decoration, which comprises a pointing device main body, a pointing head is mounted at the bottom end of the pointing device main body, a piston rod is mounted in the pointing device main body, and a mounting ring is mounted on the outer surface of the piston rod in a sleeving manner. A mounting ring is arranged on the end portion of the pointing device body, the mounting ring is connected with the end portion of the pointing device body in a screwed mode through a threaded structure, a connecting frame is mounted at the end portion of the piston rod through a screw, two fixing seats are arranged on the edge of the lower surface of the connecting frame, and rotary knobs are connected to the side faces of the fixing seats in a screwed mode. The sliding groove is formed in the side face of the pointing device body, the sliding block is slidably connected into the sliding groove, the piston rod and the pull rod can be driven to slide when th