Adjustable scaffold wall connecting piece

The utility model relates to the technical field of constructional engineering, in particular to an adjustable scaffold wall connecting piece which comprises a body, a mounting frame, a fixing rod, an auxiliary rod and a protective device, the surface of the mounting frame is fixedly connected with the body, the fixing rod is sleeved on the inner wall of the body, the auxiliary rod is sleeved on the surface of the fixing rod, and the protective device is arranged on the surface of the body. The protection device comprises a protection plate, the protection plate is clamped with the inner wall of the main body, the surface of the protection plate is a fillet, the inner wall of the main body is slidably connected with an insertion rod, the insertion rod is horizontally arranged, the insertion rod is clamped with the inner wall of the protection plate, the surface of the insertion rod is fixedly connected with a linkage plate, the linkage plate is horizontally arranged, and a pull spring is fixedly connected bet