Abstract: Adsorption and distribution of dry gas components: hydrogen, nitrogen, methane, ethane and ethylene in ZSM-5 zeolite were studied, respectively, by Grant Canonical Monte Carlo (GCMC) simulations at 298 k and 823 K and 0-1 000 kPa. Simulation results show that among all adsorbents, ethylene exhibits the most adsorption amounts, which reaches 3.05 mol/kg at 298 K under 10 kPa. Linear channels were prior adsorption space. The thermodynamic parameters, such as Gibbs free energy change, enthalpy change and entropy change were analyzed based on adsorption equilibrium constant. The results indicate that the adsorption of various components in ZSM-5 were spontaneous exothermic process with decrease of chaotic degree, low temperature favors this adsorption, and it is more favorable for ethylene to be adsorbed in ZSM-5. The simulation results of dry gas mixture adsorption in ZSM-5 show that there exist competing adsorption phenomena, the components competitiveness were affected by temperature. Under the total pressure of 500 kPa and 298 K and 823 K, methane and ethane in these mixtures rather than ethylene show the best adsorption performance, the adsorption amount ratios to ethylene were 1.5:1 and 2.3:1, respectively.