In order to study the classification of ancient porcelains based on the physical structures of glaze layer,optical coherence tomography(OCT)technology combined with X-ray fluorescence spectroscopy(XRF)technology,scanning electron microscope-energy dispersive spectroscopy(SEM-EDS)technology and laser Raman spectroscopy(LRS)technology are used to analyze the Celadon and Jun porcelains which are dated to the Jin and Yuan dynasties and excavated from the Qingliangsi site in Baofeng County,Henan Province,China.T...