A finite element model of composite laminate with delamination damage was established to analysis the fatigue delamination propagation behavior of composite laminate, and took B-K standard based on the energy release rate as the criterion of delamination growth. The residual strength model was adopted and VUMAT user subroutine was introduced to judge the failure of model and reduce the stiffness performance of material. Based on the Abaqus simulation analysis software, the delamination growth mechanism of composite laminates with initial delamination damage under fatigue compression load was simulated. The results indicated that with the fatigue load applying, the delamination length increased and reached a stable value finally, while the delamination growth rate reduced, a good agreement was obtained between FEA analysis and the experimental results.