The wavelength dependence of absorption of laser has been studied experimentally in the “Sheng Guang” and “Xing Guang” laser facility with the gold disks at a some chosen angle of incidence. The experiments show that inverse bremsstrahlung absorption is the main absorption mechanism and the the absorption increases when laser wavelength decreases. Although the absorption of 0.351 μm laser at 10° angle of incidence is higher than that of the others, the absorption of 0.351 μm laser at 45° angle of incidence is only 75% and scattered light is up to 25%.