As the atomic lines power of atomic spectrum light is weak and wavelength cannot trace to notional standard, this paper introduces a development technology of standard wavelength source at 266 nm. Using second harmonic generation and fourth harmonic genemtion technique, the laser beams at 532 nm and 266 nm are obtained which based on 1064 nm single solid-state ring laser. Using modulation transfer spectroscopy, the frequency of the 532 nm laser is stabilized at a10 hyperfine spectra of 127I2 R(56)32-0. Laser beam at 266 nm is obtained from frequency stabilization laser beam at 532 nm using external circular frequency doubling technology. The 532 nm laser is traced back to femtosecond laser based optical frequency comb apparatus in National Institute of Metrology, and this indirectly realizes the quantity traceability at 266 nm wavelength. The experiment results prove that the Allan variance of standard ultraviolet wavelength source at 266 nm is less than 1×10-10. The ultraviolet spectrograph corrected by wavelength standard has fine wavelength precision.