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A theoretical model based on energy conversation is constructed to characterize the contracting behavior of the non-conductive droplet actuated by the dielectric effect in an immiscible dielectric liquid.To verify the theory,COMSOL is employed to simulate the evolution of the droplet based on dielectrowetting,and a measurement platform is established to monitor the change process of the droplet profile.The contact angle and the height of the droplet increase linearly up to 48° and 2.03 mm respectively when U ranges from 55 V to 160 V,while the droplet remained stationary when U＜55 V.The relative experimental results coincide with the prediction of theory and the simulation analysis.