Abstract: It is introduced about the experiment process of measuring the surface tension of students self-made alkanolamide by automatic surface tension meter.Through the experiment students can not only to master the sample synthesis,pretreatment methods,but also can better understand and master the working principle,operation methods and quantitative analysis methods of surface tension meter.In the experiment teaching,every student tests his own sample.It improves the students interest in learning and practical ability,trains students awareness of instrument maintenance.