The invention discloses an energy-saving type plastic pipe cutting and polishing device comprising a base plate. The left side and the right side of the bottom of the base plate are both fixedly connected with supporting seats. The left side and the right side of the top of the base plate are both fixedly connected with side plates. A supporting block is fixedly connected with the center point ofthe top of the base plate. A fixing plate is fixedly connected with the top of the supporting block. The top of the fixing plate is symmetrically provided with two sliding grooves. According to the energy-saving type plastic pipe cutting and polishing device, through mutual operation of the sliding grooves, arc clamping plates, fixing rods, reset springs, protective covers, pulleys, rotating shafts, coiling drums, steel wire ropes, gears, forward and reverse motors, forward and reverse rotating shafts, threaded rods, threaded sleeves and racks, the plastic pipe cutting and polishing device achieves a good fixing effect and can stably fix the plastic pipes of different diameters, the situation that in the cutting process, since the plastic pipe deflects, the plastic pipe is damaged is avoided, unnecessary economic loss is avoided, and the production cost is reduced for a factory.