Abstract: In order to study the influences of the type and thickness of dielectric materials on the characteristics of plasma deicing, experiments of nanosecond-dielectric barrier discharge (NS-DBD) plasma actuation deicing were carried out under the condition of no incoming flow. Oscilloscope was used to record the voltage and current waveforms during the discharge of the actuator. Infrared thermal imaging camera and SLR camera were used to record the temperature changes and ice melting images during the experiments. The results show that the peak-to-peak discharge current, the discharge power and the average surface temperature are all positively correlated with the dielectric constant of the dielectric layer, and negatively correlated with the thickness of the dielectric layer. After the actuator surface reaches a thermal equilibrium, the average surface temperature of the alumina ceramic (dielectric constant ε=9) actuator is 30 ℃ higher than that of PTFE (dielectric constant ε=2.55). For the same dielectric material, the surface temperature of the actuator with a thickness of 0.3 mm is 15 ℃ higher than that of 0.8 mm. Therefore, choosing a dielectric material with a large dielectric constant and a small thickness help increase the surface temperature of the plasma actuator and thus enhance the deicing ability. Finally, the deicing mechanism of NS-DBD plasma is analyzed. The rapid heating effect of gas plays a key role in the deicing process.