Since the bidirectional reflectance distribution function(BRDF) could show well the infrared reflecting and scattering characteristics of exterior surface of buildings,three typical materials,granite,aluminum sheet and coated glass,which are often used on the exterior finishing surface of high-rise buildings,were chosen to be investigated.The BRDF distributions of these surfaces were measured by laser waves of 0.632 8 μm,1.340 0 μm and 3.390 0 μm respectively at different incidence angles,using the white standard plate(approximate Lambert Body)as a single sample,and the reflecting and scattering characteristics of these surfaces were analyzed.When the length of laser wave is 3.390 0 μm,there is a phenomenon of more peaks on the reflecting of coated glass’s surface and the values of these peaks are higher than that of 0.632 8 μm and 1.340 0 μm at the same time.It is shown that there is large diversity in the reflecting of coated glass’s surface with different incidence waves.