No reference materials are available when it comes to quality monitoring,valuation traceability,and transfer for the domestic enterprises taking part in the smelting,manufacturing,processing,and testing of pure gold,gold products,and gold-bearing materials.As a solution,the pure gold purity reference material with a gold grade of 99.999 % is researched and developed.The reference material has a tidy surface,intact edge,and no hollows,fissures and interlayers.After vibrated by ethyl alcohol(1＋1) and dried,the material is sealed in a vacuum and stands by.The homogeneity and stability are verified,both meeting the requirement of reference material research and development.ICP-MS,GD-MS,inert gas-infrared absorption thermal conductivity method and infrared combustion method,and such advanced testing means are used,and 77 impurity elements in the pure gold purity reference material are valued with joint valuing method.The valuing is precise and the uncertainty degree is reasonably rated.