In order to obtain the parameters of the GTN-Hill1948 damage model, a specimen with a notch and a shear specimen of Al6061 panel were designed to get the load-displacement curves. Based on the ABAQUS software, the corresponding model of the specimens was built. The material parameters, void volume fraction and shear damage coefficient of the model were identified by an inverse method, comparing the experimental results with the numerical results. And to verify the correctness of the two parameters, the specimen with a hole was designed. The results show that the initial void volume fraction is 0.0005 and the shear damage coefficient is 2, which are determined by the inverse method. The GTN-Hill1948 damage model can predict the failure location of Al6061 panel.