Abstract: Glass vitrification technology will be used to treat high level liquid waste(HLLW) of Sichuan Environment and Protection Engineering Co. Ltd. (SEPEC). But this kind of HLLW contains high-sulfur and high-sodium, it slows down dynamitic process of the form of glass, restricts oxide loading of the waste glass, and causes yellow phase. That impair the quality of waste glass. Using simulants include many kinds of glass formulations are prepared accordingly to contents of HLLW, and researched and verificated. Decreasing the contents of Si and B in basic glass to raise contain Na₂SO₄ in waste glass; adding Sb₂O₅ and V₂O₅ content to increase oxygen ion in molten glass to increase its basicity. After compared the glass formulations and make improvements in laboratory, then the recommend formulation is given. Using this kind of glass formulation to do cold test on PVA facility to test the process properties and quality of waste glass, without accumulation of a separating yellow phase, the results meet the requests of its standards. Project of SEPEC (VPC) takes this kind of final glass formulation in its basic design documentation.