This essay mainly studies the effect of the retro-reflective material on the construction energy consumption under different climatic conditions when used in the building. Aiming at four main climatic regions (severe cold regions, cold regions, hot-summer and cold-winter regions and hot-summer and warm-winter regions), and taking certain typical public building having shopping mall and hotel functions in one as the study object, this essay uses PKPM energy consumption analyzing software to perform the comparative analysis on energy consumption before and after using the retro-reflective material. The results find out that: in different climatic conditions, the energy saving effects of the retro-reflective material are quite different. In the cold regions, hot-summer and cold-winter regions and hot-summer and warm-winter regions, the energy saving effect on the public building is obvious. What’s more, the longer the time when a region needs the AC is, the more notable the energy saving effect becomes; but in severe cold regions, usage of the retro-reflective material in the envelope enclosure of the building may aggravate the energy consumption instead of alleviating it.