The purpose of this study was to discover the elemental change of the tracemetal surface of the precious porcelain alloy. The alloy was degudent H. For this purpose, the following experiment was made the analysis of the elemental change of the surface precious gold porcelain alloy were done by EDXA, and EPMA. The result is as follows, The Indium was transported to the alloy surface and its segregation to within a few microns of the porcelain-metal interface.