讨论了结构有限元分析模型部分设计参数型的修正方法，提出了一种利用非完备实测模态参数修正有限元分析模型的迭代修正方法，即振型自由度的扩充在每次迭代中进行，有效地改善了因振型自由度扩充引起的误差，被修正的参数为结构设计参数，所获模型的物理意义十分明确，并与动态设计相适应．实例表明，该方法修正效果良好． The method to correct the design parameters of structural finite element model was discussed. An iterative method was proposed to correct the finite element model by using incomplete measured modal parameters. That is to say, the expansion of modal degree of freedom was carried out in each iteration, The error caused by the expansion of modal freedom is effectively improved. The modified parameter is the structural design parameter. The physical meaning of the obtained model is very clear and it is compatible with the dynamic design. The example shows that this method has a good correction effect.