文章阐述了变压器零序电抗的实测方法并给出了折算成标幺值的公式，同时分析了常用的变压器零序电抗与正序阻抗之间的关系，为简化计算提供了方便。(This paper expounds the measuring method of zero sequence reactance of the transformer are converted into normalized value formula, it also analyzes the relation between transformer zero sequence reactance and positive sequence impedance, which provides convenience for the simplified calculation.)