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文章对病态的混合系数线性模型Z(t)=[X(t)]′α+[Y(t)]′β提出一类新的估计h-K型估计，讨论此种估计的相关性质，利用Stein式压缩技术证明了可以改进岭估计（在均方误差意义下）；同时给出参数的最优值满足的条件，证明h-K型岭估计的可容许性。“,”The paper first proposes the h-K class of estimators of the coefficients of the mixed-effect linear model Z(t)=[X(t)]′α+[Y(t)]′β in the ill condition.The ridge estimators is improved by applying the idea of the James-Stein regression on this class of biased estimators under the mean square error criterion;then the condition that the value of the parameter satisfies is given. This class of biased estimators is proved to be ad?missible.