The precision and bias of the DSF type of cross-rotation and shrinking machine are in full compliance with the requirements of the relevant sampling standards. The samples with reduced shrinkage are representative, with no shrinkage deviation and accurate shrinkage ratio. At the same time, due to the use of a special cleaner and shrink disk, the special wet adhesive material and a small amount of material can also be unbiased and reduced, so the shrinking machine has strong adaptability. The contact part of the cleaner and the distributor is a material that is resistant to wear and hard to adhere to the material, and is easy to clean and is not likely to cause blockage. The size of the shrink port determines the reduction ratio, which is adjusted manually by the user.