Abstract: To reduce product quality problem caused by color measuring deviation and have a better control of product quality in dyeing and printing sectors,it is necessary to evaluate color measuring result.Color measuring result′s uncertainty is evaluated on the basis of analyzing evaluation methods of measuring uncertainty,taking into consideration the characteristics of color measurement at the same time.Firstly,according to evaluation method of uncertainty of ISO,calculation of spectral reflectance′s uncertainty is analyzed based on uncertainty′s sources and correlation coefficient between different spectral reflectance;then chromatic value′s uncertainty is calculated based on spectral reflectance′s uncertainty.Finally,practical application of color measuring result′s uncertainty is analyzed by examples.The present work has laid a theoretical basis for further study.