Stepladder for building decoration

The invention discloses a stepladder for building decoration. The stepladder for building decoration comprises a first base and a second base. A first groove is formed in the side face of the first base. A second groove and a third groove are formed in the two sides of the second base. The inner side faces of the second groove and the third groove are in shaft connection with a threaded rod through a bearing block. One end of the threaded rod is fixedly connected with a rotary knob, and the other end of the threaded rod is in threaded connection with a push plate. The side face of the push plate is fixedly connected with a movable plate. A threaded hole is formed in the side faces of the push plate and the movable plate. The threaded rod is connected in the threaded hole in a threaded mode. The movable plate is sleeved with the first groove in a sliding mode. The front side and the back side of the first base are fixedly connected with fixing rods, and the upper surfaces of the fixing rods are provided with c