According to the theory of infrared radiation and principles of temperature measurement using infrared imagers, a reflected temperature compensation method was proposed to compensate the effect of environmental radiant on the infrared temperature measurement. The principles and implementary methods of reflected temperature compensation were introduced, and the theoretical calculation formula was obtained. Through the relevant experiments, it was indicated that the method can be used to compensate the reflective energies of the high-temperature objects under the condition that measured objects are arounded by high-temperature objects. The selection of infrared mirror is related to the surface of a measured object. If the measured object can be regarded as Lambertian, the aluminum foil can be chosen as the infrared mirror; if the measured material is non-Lambertian, the infrared mirror should be replaced by a material that has a similar structure with the measured object surface. After temperature compensation, it can be more accurate to measure the surface temperature of the Lambertian and the measuring error is within 2%; Furthermore, the accuracy of the temperature measurement is also greatly improved for the non-Lambertian and the measuring error is not more than 5%. Experimental results show that the method is simple and of high accuracy,and is applicable to the most of infrared imagers.