The present invention is double layered even when the expandable material leaks into the soft seam when expanding the expandable mineral material by enclosing a separate fabric material with a single layer of hot-wet cloth, or sewing a sealed bag with bentonite inside. It is related to the physical therapy hot pack which can prevent the external leakage of thermally expandable minerals and extend the life expectancy as well as replace the soiled outer layer with less heat loss. In a predetermined form to form a plurality of pockets and insert the expandable minerals therein, the inlet is sealed in the inlet, in which the expandable mineral is expanded by covering the cover of the fabric material with the outer surface of the warm compress It is characterized by double blocking of leakage leaking.
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