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demand of propylene, which is an important organic chemical feedstock, increases from year to year as demand of derivates such as propylene increases rapidly.Propylene mainly comes from oil and current propylene production line has provided source for propylene to the largest extent, thus new source and application technology of propylene is receiving extensive concern day by day.From strategic perspective, propylene composition can be adjusted, dependence on oil resource can be reduced and price risk can be avoided with natural methanol-to-propylene (MTP technology).This study is intended to achieve the goal above by changing grain size and channel structure of the molecular sieve as well as acidity and acidity intensity of the catalyst through change of preparation conditions for ZSM-5 molecular sieve, e.g.crystallization temperature (100~150℃), crystallization time (10~100h), pH value (10.5~12.5) and etc.Impact of the template agent and hydrogen exchanger on catalytic performance of the molecular sieve is also inspected in this study, which indicates that tetrapropylammonium bromide is preferred for the template agent and lmol/L HCl solution is preferred for better result of the hydrogen exchanger.The evaluation method is: adopt fixed bed reactor and use methanol as the feedstock and water as the dilution agent; airspeed of the methanol mass is 4h-1, mass of ratio water to methanol is 2∶1, catalytic reacting temperature from methanol to methyl ether is 300℃ and reaction temperature of propylene catalyzing is 480℃, with normal pressure.Finally, selectivity of propylene is improved effectively, while that of ethane is reduced significantly, and P/E mass ratio is increased accordingly.In addition, this catalyst is with simple preparation procedure, without use of agglomerant and reduces preparation cost of the catalyst effectively.