Abstract: A three dimensional and elastic finite element model for adhesive bonded single lap joint of aluminum alloy by using cohesive zone model was established, which was proved to be valid by comparing with the shear stress and peel stress distribution of the adhesive layer in G-R analysis model. By simulating the tension test and fitting the load-displacement curves, the fracture parameters of adhesive cohesive zone model were obtained, which were then applied to predict the residual strength of adhesively bonding composite repaired structures with double-edge cracks. The results show that the relative error between the prediction and the experiment is 3.8%, which proves the validity and high accuracy of the method. It′s helpful for carrying capacity′s analysis of adhesively bonding composite repaired structures.