In this paper,we present a modifed model describing the constitutive relation of viscoelastic dielectric elastomer(DE).The uniform uniaxial tension-recovery experiment was carried out at diferent stretching rates.Based on Yeoh hyper-elastic model,model-ftting approach is put forward to obtain the relationship between parameters of Yeoh model and stretching rate,thus the modifed model was obtained.From the approximate relationship between harmonic motion and uniform reciprocating motion,the stress–strain curve in the recovery process was also identifed through the hysteresis between stress and strain.The modifed model,with concise form and evident physical concept,can describe the strong nonlinear behavior between deformation and mechanical stress of the material in a common stretching rate range(from 0.01 s 1to 0.8 s 1at least).The accuracy and reliability of the modifed model was examined. In this paper, we present a modifed model describing the constitutive relation of viscoelastic dielectric elastomer (DE). The uniform uniaxial tension-recovery experiment was carried out at diferent stretching rates. Based on Yeoh hyper-elastic model, model-ftting approach is put forward to obtain the relationship between parameters of Yeoh model and stretching rate, thus the modifed model was obtained. From the approximate relationship between harmonic motion and uniform reciprocating motion, the stress-strain curve in the recovery process was also identifed through the hysteresis between stress and strain. modifed model, with concise form and evident physical concept, can describe the strong nonlinear behavior between deformation and mechanical stress of the material in a common stretching rate range (from 0.01 s 1to 0.8 s 1 at least). accuracy and reliability of the modifed model was examined.