液体表面张力的测量是大学物理实验的基本实验之一，该实验由于系统误差较大，提高测量精度一直是人们高度关注的问题. 本文对现有吊环法液体表面张力系数测量装置进行改进，引入了测微升降台和螺旋高度调节架，控制拉膜平稳性的同时可以读出拉出液膜的高度，一定程度上保证了实验的重复性，并通过不同壁厚的吊环定量研究液膜重力对实验结果的影响，提升了液体表面张力系数测量的准确性. 

The measurement of liquid surface tension is a fundamental experiment for physics undergraduates. However, due to the large systematic error, increasing the experimental accuracy and precision has always been a persistent challenge in this project. We propose an improvement to the device by incorporating micrometer lifting platform and spiral height regulator based on the pull-off method. These modification enable a better control over the liquid membrane as well as a measurement of its height during detachment which is a critical parameter for evaluating the operational stability. In addition, the liquid membrane gravity was considered and its influence on experimental results is investigated quantitatively by applying metal rings with identical mean diameters but different wall thickness, thereby the accuracy of liquid surface tension coefficient measurements has been enhanced effectively.