Abstract: Dielectric Elastomer （DE） is a type of electric field Electro-active polymer. Subject to an electric voltage,it emerges good electrostrictive strain behavior. it also can quickly restore to its original size after removing the electric voltage. People can precisely controlled its deformation by controlling the size of the voltage. Based on Neo-Hookean strain energy model,the electromechanical behaviours of acrylic polymer actuators with shapes of tubular are simulated by ABAQUS. Futhermore,for the tubular dielectric elastomer actuators,the influence of the mechanical pre-stretch is considered,the electromechanical coupling characteristics of them are simulated and analyzed. The conclusion can provide a theoretical basis for further research on electrostrictive strain behavior,deformation failure and stability of the tubular DE actuators.