In view of the fact that the composite shell model does not consider the stress along the thickness direction of plate, solid model called VUMAT subroutine is chosen, the lamb wave plate is simulated with 3D Hashin failure criterion, the simulation results are compared with no damage plate. The results of the analysis show that the model and the subprogram had good recognition effect for tiny crack plate, which provides a new reference for research of lamb wave of tiny crank composite plate.