Heating sleeve pen and method for transferring frozen section to glass slide

The embodiment of the invention provides a heating sleeve pen and a method for transferring a frozen section to a glass slide. The heating sleeve pen comprises a pen point and a pen container, the pen point comprises multiple layers of sleeves which are sequentially connected in a sleeved mode from inside to outside, every two adjacent layers of sleeves can relatively slide, each sleeve comprises a first end and a second end in the first direction, the multiple layers of sleeves comprise a bottom layer sleeve and a top layer sleeve arranged on the bottom layer sleeve in a sleeving mode, the first end of the top layer sleeve forms a first end, and the second end of the top layer sleeve forms a second end. The second end of the bottom-layer sleeve forms a second end part, or the second end of the top-layer sleeve and the second end of the bottom-layer sleeve jointly form the second end part, and the second end part is used for being in contact with the glass slide to heat the glass slide; the pen container is c