Experiments　are　performed　to　measure　surface　tension　and　contact　angle　using　three　groups　of　prepared　LiBr　aqueous　solution　samples.　Experimental　results　show　that　there　is　a　big　difference　between　surface　tension　values　of　LiBr　solution　containing　alcohol　additives　measured　with　pendant　drop　method　and　Wilhemly　plate　method　respectively.　The　reason　of　inconsistency　is　explained.　In　addition,　surface　tension　and　contact　angle　of　LiBr　aqueous　solution　on　copper　plate　both　decrease　if　the　amount　of　2EH　is　suitably　added　such　as　65ppm.　If　amount　of　alcohol　additives　is　greater　than　a　certain　limit,　contact　angle　on　copper　plate　of　LiBr　aqueous　solution　would　increase　and　wetting　on　heat　transfer　surface　goes　bad.　Adding　small　amount　of　CNT　in　above　mentioned　solution　containing　alcohol　additives,　surface　tension　and　contact　angle　both　decrease.　It　would　be　beneficial　for　enhance　of　both　mass　and　heat　transfer　in　absorber　and　good　for　improving　chillers＇　COP.