Usually　when　cutting　thicker　material　we　need　higher　power　laser　during　laser　cutting.　If　we　use　a　saw　to　cut　the　situation　will　be　different.　In　this　paper　we　report　a　novel　technology　for　thick　glass　cutting　with　a　small　power　laser　saw.　The　laser　saw　is　made　of　532nm　green　laser　with　long　pulse　width　550μs.　It　is　not　a　special　but　an　ordinary　green　laser.　The　special　focus　point　of　laser　can　be　moving　up　and　down　at　high　frequency　with　the　control　lens.　During　cutting　it　works　like　a　saw　so　we　call　it　laser　saw.　The　average　power　of　the　laser　is　approximately　0.7W　much　less　than　1W.　However　with　this　small　power　laser　we　can　cut　over　10mm　thick　glass.　The　cutting　speed　can　be　1m/min.　The　roughness　of　the　cutting　surface　is　about　10　micron　meters.　There　is　no　obvious　crack　on　the　edge　of　kerf.　It　shows　great　potential　application　with　this　laser　saw　technology.