The invention relates to the technical field of calorimeter processing and particularly discloses a dynamic K value calorimeter heating barrel connecting structure for connecting a heating barrel anda calorimeter cup. The heating barrel is arranged on an inner side of the calorimeter cup, and the connecting structure comprises an upper insulating plate arranged on an outer bottom surface of the heating barrel and a lower insulating plate arranged on an inner bottom surface of the calorimeter cup. By using the heating barrel connecting component, a heating resistor wire can be effectively prevented from being broken, and the difficulty of equipment maintenance can be greatly reduced.