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Dielectric elastomer (DE) are a kind of novel smart materials that exhibit change in size or shape when stimulated by an electric field, based on Maxwell’s effect. To study the power generation characteristics of dielectric elastomer transducer in pure shear tensile, dielectric elastomer roll transducer with prestretch properties was made by spring and the electromechanical coupling mode of dielectric elastomer transducer in pure shear tensile was established based on the Neo-Hooken model, and the corresponding simulation model was set up in Matlab/Simulink environment. The simulation research of the power generation characteristics of dielectric elastomer transducer and the influence of different spring coefficients on its generation characteristics were carried out. The experimental research was done by making dielectric elastomer roll transducer, and compared with the simulation results. The simulation and test results showed that the power characteristics of dielectric elastomer roll transducer were higher than those of the general tensile mode transducer. Under the same condition of tensile mode, initial voltage and the prestretch limitations, the power characteristic was increased with the increase of elastic coefficient. The above results about dielectric elastomer roll transducer provided theoretical reference for applications of dielectric elastomer generators in the field of vibration energy harvesting in the future.