Abstract: A wall polishing machine comprises a handle. The handle comprises at least two longitudinally arranged rod components. Each of the rod components is disposed with a dust guiding pipe therein. In any pair of adjacent rod components, the dust guiding pipe of a first rod component is exposed from the first rod component and has an outwardly exposed end which is inserted into a second rod component to connect to the dust guiding pipe of the second rod component, and secure connection is attained by means of a clamping component. As the handle is designed as being formed by at least two longitudinally arranged rod components connected via a clamping component, each of the rod components can be packed after being disassembled when the machine is not in use, therefore offering convenience in storage and carrying to users.