At　high　temperature　conditions,　the　glass　molten　by　the　combined　action　of　gravity　and　surface-tension　form　an　oval.　Through　digital　image　measurement　system　we　can-obtain　glass　molten　oval　contours　and　the　contact　angle.　By　the　Bashforth-Adams　equation　which　deduced　from　Young-Laplace　equation　to　obtain　the　glass　molten＇　surface　tension　at　the　corresponding　temperature　conditions.　This　method　has　good　reproducibility　and　accuracy.