中文摘要：

对于e^＋^e→τ ＋τ^-过程在阈值附近的截面，目前的理论计算精度已经达到10^-4．基于理论截面的高精度计算，利用极大似然函数方法，重新拟合由e“末态标记的τ^＋τ^-事例的扫描数据，得到τ质量的测量结果为1776．98（＋0.44＋0.12-0.51-0.13）MeV，其中第一项是统计误差，由拟合程序给出；第二项是系统误差，主要包含能量刻度，能散及本底估计等三方面的不确定性．

英文摘要：

Recently many theoretical calculations have been made for the cross section of e^＋e^- →τ^＋τ^- near the threshold, the accuracy of which is up to 10^-4. Based on one of the calculations, the e μ-contained final state data are refitted by utilizing the technique once adopted by BES collaboration for τ mass measurement. The systematic uncertainties are analyzed again and the final result of τ mass is1776.98（＋0.44＋0.12-0.51-0.13） MeV.