The principle and configuration of surface temperature measurement system based on blackbody demarcation is introduced,and the blackbody is used to demarcate the IRFPA in order to gain the surface temperature′s measurement curve.The drift characteristic of IRFPA is analyzed,and the drift curve is fit to compensate the energy drift.Measurement experiment is carried through on a radiation target which temperature is controllable,the measurement data is compared between the fore-and-aft compensation.The precision of temperature measurement after compensation is improved obviously.