Considering the dynamic properties of the traditional inter-connected damper based on traditional single-gas-chamber integrated hydro-pneumatic strut (IC HPS),one type of IC HPS was presented,which was designed based on a proposed novel integrated dual-gas-chamber hydro-pneumatic strut.Comparing with the traditional single-gas-chamber HPS,the added annular gas chamber was introduced in the annular oil chamber.The mathematic model was derived based on the working principle of the novel dual-gas-chamber IC HPS,and then the related AMESim simulation model was established.The validity of the established simulation model was verified through the comparison with available experimental data and those shown in literatures.Then dynamic analysis and comparison of the proposed dual-gas-chamber IC HPS with the other two type IC HPS were detailed.The result shows that the proposed dual-gas-chamber IC HPS can improve the phenomenon of negative working pressure and output force distortion in the synchronous and asynchronous working condition,which are significant in the traditional IC HPS,with acceptable stiffness characteristics.Finally,the sensitivity of the essential designed parameters of the proposed dual-gas-chamber IC HPS to the dynamic properties were presented to show its validity.