Abstract: A 6.3 m vehicle-borne solid deployable reflector consists of gore panels, backup structures, deployable mechanisms, a pedestal and supporting beams. According to the different properties of structural components and deployable mechanisms, the finite element method (FEM) model of the deployable reflector is established. The modal analysis, structural analysis with gravity load and wind load analysis are performed. The variations of modal displacement and surface accuracy are revealed by the simulation results. A significant conclusion is obtained that the stiffness along the circumferential direction is not strong due to the introduction of deployable mechanisms, which can provide a guideline for the subsequent structural design and mechanism integration.