The invention relates to an alkali-free glass matching material applicable to floating formation. The material is characterized by being prepared from, by mass, 57.5-61.5% of SiO2, 1-2.5% of P2O5, 15-19.1% of Al2O3, 0.1-0.3% of ZrO2, 3.7-6% of CaO, 6-7.5% of B2O3, 2-3.8% of MgO, 6-7% of SrO, 0.1-0.2% of SnO, 0.1-0.25% of MoO3 and 0.1-0.25% of WO3, wherein the total content of SiO2 and P2O5 is 60-63%, and the total content of SiO2, Al2O3 and ZrO2 is 75-77%. The material has the advantages that the high-temperature intrinsic viscosity of glass is low, the surface tension of glass metal is lowered, a floating formation process of the glass is easily controlled even if the operation range of floating formation of the glass is expanded, and the density uniformity of a glass product is greatly improved.