A new technique to synthesize single-walled carbon nanotubes(SWCNTs) has been developed by means of the alcohol catalytic chemical vapor deposition(ACCVD) method on MgO supported catalyst using fluidized-bed.Ethanol vapor was introduced into the fluidized-bed from a temperature-controlled bubbler by the flow of Ar.With this technique,the reaction conditions can be controlled simply.The fluidized-bed was applied as the reactor instead of quartz boats.Ethanol vapor and the powder of catalyst can be mixed with each other more sufficiently.MgO support can be easily removed from SWCNTs by acid solution.Characteristics of as-grown SWCNTs were presented using Raman spectroscopic analysis and TEM.The experimental results show that the SWCNTs produced by this method possess the significant quality of being free from amorphous carbons and having uniform diameter.