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Cr-CrO cermet solar selective coatings with a double cermets layer film structure were prepared using a special direct current (dc) magnetron sputtering technology. The typical films structures from surface to bottom substrate were measured to be an Al2O3 anti-reflection layer on a double Cr-CrO cermet layer on an Al metal infrared reflection layer. Optical properties of optimized Cr-CrO cermet solar selective coating were absorptance (α) = 0.95 and emittance (ε) = 0.10 (100 0C). Atomic force microscopy (AFM) image showed that Cr-CrO cermet film was very smooth and their grain size was also very small. The results of thermal stability test showed that the Cr-CrO cermet solar selective coatings were stable for use at temperature of 400 0C.Keywards : 태양선택흡수막(solar selective coatings), 마그네트론 스파터링(magnetron sputtering,), 광학적특성(Optical properties), 열적안정성(Thermal stability)