Bird strikes cause hundred million dollars in damage to civilian and military aviation each year. In order to reduce the cost of validation tests and improve the efficiency of aircraft design, CAE technique is introduced to perform bird-strike analysis. A reliable FEM model is built up to simulate the bird-strike process on vertical tail LE structure of a certain type of aircraft in HyperMesh environment. SPH algorithm is employed since it is more efficient tracking of material deformations and history dependent behavior than Euler bird model. And a beam type spring element with failure model material is employed to simulate the riveted joints. The numerical result based on finite element coupling and SPH algorithm using LS-DYNA software indicates that the structure meets the requirement of the civil aviation regulation and that the method and the calculation model are reliable.