A cutting tool includes a body, a moving base, and a roller base. The body has a rail groove, whose one side is extended upward with a stopping wall. The moving base is disposed in the rail groove of the body and has a cutting wheel. The moving base is connected with a transmission element and driven by the transmission element to move along the rail groove. The roller base is interposed between the moving base and the stopping wall. There are a plurality of elastic elements between the roller base and the stopping wall. The roller base is disposed with at least two rollers opposite to the cutting wheel.