A combinational hot compress device comprises a first and second hot compress pads and a first and second positioning elements are respectively disposed around the two hot compress pads. A first and second areas are adjacently disposed on top of the first hot compress pad and a first heating device is disposed in the first area. A third and fourth areas are adjacently disposed on top of the second hot compress pad and a second heating device is disposed in the fourth area. When the first or the second hot compress pad is folded in half, the two halves thereof are coupled by the first or the second positioning element, so that the first and the second areas or the third and the fourth areas are overlapped with each other. Thereby, the two hot compress pads are formed which can be used independently.