Abstract: A heat-absorbing/heating device with high efficiency and a supporting device thereof, wherein a plurality of spaced heat-absorbing members are disposed on a heat-absorbing surface of the heat-absorbing/heating device and a plurality of space heating members are disposed on a heating surface thereof, and a heat-surrounding member with heat-guiding members is disposed around the heat-absorbing members whereby when heating the heat-absorbing members, the heat-absorbing members can rapidly absorb and collect the heat at high efficiency and conduct the heat to the heating members for further heating the liquid or food contained in the heating-absorbing/heating device, and wherein the supporting device includes a large support portion and a small support portion corresponding to the heat-absorbing/heating device whereby when heating, the heat-absorbing/heating device can be placed on the supporting device.