Dynamic response of polycrystalline metals is very complex which includes many mechanisms and effects.Polycrystalline texture development under dynamic loading attracted much attention because of interesting phenomena and great challenges to experiment and simulation.The objective of the present work was to gain insight into the inelastic deformation mechanisms that govern the response of shocked single and polycrystalline aluminum.We improve the elasticity,dislocation dynamic and work hardening formulation in the crystal plasticity model to suffice for the microstructures development at high pressure and strain rates.Strength data of polycrystalline under high pressure are used to calibrate models parameters.Taylor hypothesis and crystal plasticity finite element method(CPFEM)are used to model the texture development of polycrystalline aluminum under shock wave loading separately.The calculated results indicate grains have an obvious rotation especially at high pressure.The velocity profile of polycrystalline Al/LiF calculated by the thermoelastic-viscoplastic crystal plastic model shows a phenomena of quasi-elastic releasing which is close to the experiment.