The invention discloses a pipe cutting device convenient to use. The device comprises a fixing seat, a fixing rod is arranged on the fixing seat, and two force rods are connected to the fixing rod in an inserted mode. A rack is arranged on the force rods, a moving groove is formed in the rack, and the rack is connected to the fixing rod in an inserted mode through the moving groove. One end of the rack is sequentially provided with a first cutter rod and a first fixing rod, the center positions of the first cutter rod and the fixing rod are movably hinged to the rack through a long rivet, and a first blade is arranged on the side, opposite to the first fixing rod, of the first cutter rod. The pipe cutting device convenient to use is characterized in that a fixing mechanism capable of being subjected to width adjustment along with the size of a pipe so as to fixing the pipe is arranged on the side, opposite to the first cutter rod, of the first fixing rod, a driving mechanism capable of being stepped to drive the rack to move in the front-back direction is arranged on the fixing seat, the structure is simple, and using is convenient.