The Ionic Polymer-Metal Composites (IPMC) actuator as electro-active polymers is well known for the fast and flexible bending actuation in the electric fields. In this paper, the IPMC actuator is fabricated and designed for realization of biomimetic flapping motion of dragonflies. The resonant frequency of a wing of anisoptera(dragonfly) was calculated by using finite element method and experimental frequency response function. Flapping motion of zygoptera(dragonfly) was considered in resonant frequency of the designed wing structure. The experimental results show that the IPMC wing structure of dragonfly has a good flapping performance in resonant frequency.