Series　of　rod　samples　of　Zr55Al10Ni5Cu30　alloy　were　prepared　by　magnetic　suspend　melting　and　copper　mold　suction　casting　method　using　99.9wt%　high　purity　zirconium　and　99.4wt%　low　purity　sponge　zirconium　respectively,　the　effect　of　purity　of　zirconium　material　on　mechanical　properties　and　microstructure　of　Zr-based　bulk　metallic　glass　were　investigated.　The　result　shows　that　high　purity　material　alloy　could　enhance　the　thermal　stability　and　glass　forming　ability　of　Zr-based　bulk　amorphous　alloy,　compression　fracture　surface　analysis　indicate　that　the　vein　patterns　density　increase　with　the　material　elements　purity　increase,　the　average　compressive　fracture　strength　is　increased　to　8.52%　than　that　of　low　purity　samples.