This study presents the analysis results of chemical composition of metal objects which excavated from Buyeo Neunsalli site.A total of 85 metal objects was selected for this study, most of them were ornaments and there also included large fragments of aureole.In this work, non-destructive analytical technique used by μ-XRF.As a result, metal objects on Neunsalli site have divided into 5 groups : copper alloy, gilt-bronze, gold, silver, gilt-silver and iron.The objects composed of Copper alloy have subdivided pure copper, bronze and brass, especially bronze objects had into two component system (Cu-Sn) and three component system (Cu-Sn-Pb).85 Metal objects of Neunsalli site were diviede according to its materials: copper alloy 28 (pure copper 22, bronze 3, brass 3), gilt-bronze 39, gold 1, silver 4, gilt-silver 1, iron 1 in Neunsalli temple site and Bronze 6, gilt-bronze 2, silver 3 in Neunsalli tomb.