Abstract: The conversion of methane to aromatics was investigated in a quartz fluidized bed reactor.It was observed that the induction period of catalyst and the conversion of methane were related to the reaction temperature，the partial pressure of methane and the space velocity of methane.The selectivity to benzene and naphthalene in liquid products showed different tendency with the deactivation of catalyst.All the main results（conversion of methane，yield and selectivity of benzene）were similar to the results in the micro-scale fixed bed.Also the effect of the coke deposited on the catalyst on methane conversion and catalyst deactivation was discussed，providing the basis for the further investigation.