The errors-in-variables model is considered. By the Fisher's scoring algorithm, with the condition that the measure errors or the random fluctuations of the regressors and the response are independent, the iterative scheme of parameter estimation of the EV model under replicated observations is obtained. 介绍了Errorsinvariables模型,利用Fisher得分算法,给出了在自变量的随机影响因素和因变量的随机影响因素相互独立和无重复测量数据情况下Errorsinvariables模型参数估计的迭代公式。