In this paper,static experiments on the corrosion of slag glass melt to high alumina,electric casting zirconia corundum and zircon refractories were made, the crystalline composition and microstructure of these refractories before and after being corroded wereinvestigated by XRD and SEM;and the corrosion mechanism of slag glass to theserefractories was discussed.The experimental results show that the corrosion process of slagglass to refractorieg is a complex physical chemistry procedure.These refractories are attackedboth physically and chemically by glass melt.