In order to obtain an accurate and reliable dynamic model of aeroengine external pipe structures, the finite element model (FEM) is updated by combining the Kriging model with the multiobjective genetic algorithm (MOGA). Firstly, both the modal test and the finiteelement analysis are conducted to identify the dynamic characteristics of the pipeline model. Then, based on the selected parameters and Design of Experiment (DOE), the Kriging surrogate models of the FEM of pipe are set up by means of fitting. Finally, based on Kriging surrogate models, the FEM is updated by MOGA; the comparison is conducted on the accuracy and updating effect of different model updating methods. The results show that the Kriging surrogate model can be applied to update the FEM, which will greatly improve the efficiency and accuracy in calculation. The Kriging model method has obvious advantages over the sensitivity analysis method for aeroengine pipe structure.