Wall bushing capable of being stably clamped

The utility model provides a wall bushing capable of being stably clamped. The wall bushing comprises a bushing body and a support frame, the supporting frame comprises a lantern ring and a base plate, the inner diameter of the lantern ring is matched with the outer diameter of the pipe body, external threads are arranged on the outer wall of the pipe body, internal threads are arranged on the inner wall of the lantern ring, and the lantern ring is installed on the pipe body in a sleeving mode. A protruding ring is fixedly arranged in the middle of the outer wall of the lantern ring, the outer contour of the protruding ring is of a rectangular structure, the base plates are fixedly arranged on the top face and the bottom face of the protruding ring, one ends of the base plates are tightly attached to the outer wall of the protruding ring, the other ends of the base plates extend in the direction away from the protruding ring, protruding blocks are fixedly arranged on the two sides of the inner wall of the end