The production yields of excited oxygen O(<sup>1</sup><i>D</i>) atoms from the near ultraviolet O<sub>3</sub> photolysis are essential quantities for atmospheric chemistry calculations because of its importance as major sources of hydroxyl (OH) radicals and nitric oxide (NO). Recently, new O(<sup>1</sup><i>D</i>) quantum yields from O<sub>3</sub> photolysis between 230 and 305 nm in the Hartley band region were reported, which are almost independent of the photolysis wavelength (0.88-0.93) and smaller than NASA/JPL-2000 recommendation (0.95 between 240 and 300 nm). In order to assess consequences of the new data of O(<sup>1</sup><i>D</i>) quantum yields on the stratospheric chemistry, the changes in stratospheric chemical partitioning and O<sub>3</sub> concentration are examined using a one-dimensional atmospheric model. Our steady state model simulations for mid-latitude in March indicate that the smaller O(<sup>1</sup><i>D</i>) quantum yields result in increases of stratospheric O<sub>3</sub> (up to ~2% in the upper stratosphere), which are attributed to the changes in HO<sub>x</sub>, NO<sub>x</sub>, and ClO<sub>x</sub> abundance and their catalyzed O<sub>3</sub> loss rates.