Cryoslicer refers to an instrument that can quickly make tissue slices for observation by making tissue slices to a certain hardness at low temperature. The freezing slicer consists of a slicing device and a refrigeration system. Usually, the main machine (freezing box, sample head, quick freezing table and other devices), tool rest and blades constitute a complete frozen slicing system; Some freezing slicers also have vacuum pumping devices, which are used to absorb waste chips inside the machine and exercise the function of assisting in flattening slices.