Abstract: β-cyclodextrin grafted cellulose fiber was prepared with epoxy group as cross-linking bridge,and its structure was analyzed.The graft mechanism was investigated and the optimal grafting process conditions were determined.The experiment results indicate that it is practical to prepare β-cyclodextrin grafted cellulose with epoxy group as cross-linking bridge.The optimized process conditions of epoxidation reaction are as follows: for(1 g) cellulose fiber,(7 mL) epichlorohydrin and(6 mL) NaOH 40% solution are added,reacting for(2.5 h) at(40 ℃.) No fundamental destruction is observed in the molecular structure of the cellulose resulting from the grafting.These findings are beneficial to developing the application area of β-cyclodextrin in the textile industry.