A brunet reflective exterior wall insulation coating was prepared. The influence of titanium dioxide crystal and particle shape on coating solar reflectance was studied, and the result showed that the coating contains Rutile titanium dioxide has good reflective performance. The influence of non-ferrous pigment on coating reflective properties was studied. Among these pigments, the reflectivity of iron oxide red which has darker color is comparatively higher, and has good compatibility with coating system. It was selected as non-ferrous pigment of this brunet department coating. Iron oxide black and medium chromium yellow was added to mix the coating color, when the dosage of pigment is iron oxide red 3.72%, Iron oxide black 0.036%, medium chromium yellow 0.24%, the coating is brown, and the solar reflectance could reach 80.22%. The basic properties of coating were all conform to the National Standards, and it is a brunet exterior wall coating which has uniform atomization performance and good reflection insulation performance.