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The laser particle size analyzer was used to investigate the emulsification of emulsifier,which containing lignin emulsifier,polyether and non-ionic additive,in this paper.Some control experiments have been designed to demonstrate that the polyether and non-ionic additive contributed much more to emulsifiability of emulsifier.With polyether and non-ionic additive as auxiliaries,the modulus particle size and average particle size of emulsifier could reach to 1.65 μm and 1.97 μm.The mechanism indicated that polyether and non-ionic additive could decrease the critical micelle concentration of emulsifier.