The invention relates to a folded pineapple sawtooth-removing machine. The machine comprises a clamping device and a cutting device; the clamping device is provided with a first bottom plate and a second bottom plate which are hingedly connected with each other; the clamping device is further provided with a first vertical plate fixed on one end of the first bottom plate and a second vertical plate which can slide on the first bottom plate and the second bottom plate; a driving shaft is arranged on the first vertical plate; a driven shaft is rotatably connected onto the second vertical plate;the driving shaft is rotatably provided with a connecting shaft piece in a sleeving manner; a telescopic connecting piece is fixedly arranged between the connecting shaft piece and the second verticalplate; the cutting device is provided with a cutter supporting plate; the cutter supporting plate is hingedly connected with one side of the first bottom plate; the cutter supporting plate is slidingly connected with a height adjusting rod with a screw thread which can go up and down; the height adjusting rod is fixed with a pineapple sawtooth cutter. The pineapple sawtooth-removing machine can be folded, the folded pineapple sawtooth-removing machine has a whole size as follows: length of 10 to 20cm, width of 3 to 5cm and height of 18 to 25cm, the machine body is small in volume; the foldedmachine can be packaged through a box or a bag, is easy to store, suitable for home use and convenient to popularize.