The decoloring methods with active carbon and AB-8 macroporous adsorption resin were compared for polysaccharide extracted from Plantago asiatica L was decolored by analyzing the decoloration rate and polysaccharide retention rate. The results showed that the best conditions for decoloration with active carbon were: 0.75% active carbon, decoloring temperature 60 ℃ and treatment time 30min, under which the decolorization rate was 76.22% and the polysaccharide retention rate was 65.31%. The best conditions for AB-8 macroporous adsorption resin were as follows: the elution solvent 3 BV (1 BV=20 mL), flow rate 2 mL/min, and pH of polysaccharide solution 8.0, under which the decolorization rate was 79.78% and the polysaccharide retention rate was 89.76%. The decoloration with macroporous adsorption resin was better than that with active carbon.