This　study　selected　high　alkali　aluminosilicate　glass　as　the　research　object.　It＇s　belongs　to　the　SiO2-Al2O3-RO-R2O　glass　system.　By　changing　the　content　of　Al2O3　in　the　SiO2-Al2O3-RO-R2O　glass　system,　designed　five　basic　glass　formula.　Using　conventional　melting　method　prepared　the　high　alkali　aluminosilicate　glass.　In　the　case　of　the　same　heat　treatment,　the　glass　formulations　are　the　most　important　factor　in　the　glass　surface　tension.　Using　the　glass　surface　tension　measuring　instrument,　focus　on　the　content　of　A12O3　on　the　glass　surface　tension＇s　effects　law.　The　results　show　that　the　high　alkali　aluminosilicate　glass＇s　surface　tension　are　increase　with　the　increase　of　A12O3　content.　The　relation　between　glass　surface　tension　and　the　content　of　A12O3　conforms　to　the　formula　Y=290+6.5WAL2O3,　A12O3　factors　influence　the　surface　tension　of　the　glass　is　6.5.　©　(2015)　Trans　Tech　Publications,　Switzerland.