Abstract: The preparation technology of ion-exchange polymer metal composites (IPMC) was explored, and the Pt-IPMC samples were successfully prepared by a chemical deposition method. SEM was used for analyzing the topography and chemical composition of the surface electrodes. The displacement of Pt-IPMC sample was measured under four types of actuating signal (amplitude of 2~4 V, frequency of 0.06~0.14 Hz). The results show that the Pt atoms deposit well both inside and outside of the exchange membrane so that the depths of interior and exterior electrodes decrease to some extent. It is also found that the deformability and response speed of the Pt-IPMC samples are improved with the amplitude of driving signal rising. Furthmore, the displacement of Pt-IPMC samples all reaches a peak for four types of signals, and the Pt-IPMC sample shows the best response speed and deformability under the square wave when the actuating frequency is 0.1 Hz.