Objective:To study on elution property of pigment contained in fructo-oligofructose from Morinda officinalis suitable by resin adsorption. Method: With decolorization rate and retention rate of oligosaccharide as indexes

suitable resin was chosen

and static and dynamic adsorption tests were carried out to investigate decolorization effect of fructo-oligofructose from M. officinalis by single factor test.The content of nystose was determined by HPLC-ELSD. Result: D941 resin was chosen

optimum technology conditions were as follows:room temperature(25 ℃)

oligosaccharide solution 4 BV(pH 5.88

15 g·L-1)

flow rate 4 BV·h-1

diameter high ratio 1∶10.Under these conditions

decolorization rate and retention rate of oligosaccharide were 92.54%

82.76%

respectively

and the content of nystose increased from 22.46% to 29.94%. Conclusion: D941 resin had good decolorization effect on fructo-oligofructose from M. officinalis.