Pipe cutting device

The utility model provides a pipe cutting device. The pipe cutting device comprises a rotating mechanism and a cutting mechanism which are arranged on an operation table. The rotating mechanism comprises a support and an annular connecting piece, the support is fixed to the operation table, a gear ring is arranged on the outer wall of the annular connecting piece, at least three gears are arranged on the support, all the gears are meshed with the gear ring, the gears are evenly distributed around the gear ring, at least two gears are located on the lower middle portion of the gear ring and used for bearing the gear ring, and a motor is arranged on the support. An output shaft of the motor is connected with one gear located on the upper middle portion of the gear ring. The cutting mechanism comprises a tool bit, and the tool bit right faces the center of the connecting piece. The cutting device has the advantages that burrs are not generated on a cutting surface after cutting is completed, so that the working