The technique of the SRXRF line scan analysis was used to measure contents of 11 elements at the broken plane of the Ru porcelain from porcelain glaze to body. It is found that there exists a great different layer of contents of elements between the porcelain glaze and body. The mechanism may be that in the process of firing the porcelain

materials of glass-glaze of porcelain glaze infiltrate into the surface of porcelain body

that could fit the phenomenon of observation by different microscopes (stereomicroscope

polarizing microscope and scanning electron microscope).