用钻孔法测定焊接残余应力时，孔边塑性变形对测量精度有很大影响，本文对孔边屈服过程进行了研究，克服了以往在误差修正方法中的缺点，确定了塑性释放应变εｐ与主应力σｉ、σ２和主方向角β的函数关系，用以修正孔边塑性变形引起的测量误差，使得在二维应力状态下的测量误差降至２％以下。 When drilling residual stress is measured by drilling method, the plastic deformation of the hole edge greatly affects the measuring accuracy. In this paper, the yielding process of the hole edge is studied, which overcomes the shortcomings in the error correction method and determines the plastic strain εp and The principal stress σi, σ2 and the main direction angle β as a function of the relationship, to correct the hole edge plastic deformation caused measurement error, making the two-dimensional stress state measurement error dropped below 2%.