The invention provides a device suitable for detecting heating performance of chemical reaction raw materials of a cigarette. The device is characterized by comprising a reaction container with a sealing cap and thermocouples arranged in the reaction container, injectors for injecting the reaction raw materials are inserted in the sealing cap, one end of each thermocouple is connected with a data acquisition and recording instrument and a computer through connection wires, the reaction container comprises a polytetrafluoroethylene inner container and a stainless steel casing, and the inner container is a heating performance testing cavity for a liquid-liquid chemical reaction or a solid-liquid chemical reaction. One of two to-be-detected reactants for heating in chemical reactions of the cigarette is put into the reaction container through the device, then the other reactant is injected to have a reaction with the first reactant, heat is discharged, the reaction temperature is detected through the thermocouples and transmitted to the data acquisition and recording instrument and the computer, and the temperature of the reaction can be detected, and the heating effect of the reaction raw materials can be evaluated. The device has the advantages of small error and high detection accuracy.