Abstract: The Beijing Dental Hospital in cooderation with Iron and Steel Research General Institution, Department of Metallurgical Industry worked on Silver-Copper-Palladium alloy,with 120 cases studied clinically.This alloy showed fine mechanical and physical properties, tchemical stability and biological ffinity.It is nonpoitonous and sale,less expensive than gold alley and has the following advantages: Convenience to operate,low melting temperature,good casting fluidity, slight casting contraction,and high casting preeisiou.It can be used in inlays,crown and bridge restorations.