Abstract: The storage quality of konjac glucomannan combined chitosan coating on citrus(C. sinensis L. Osbeck cv. Jinchengbeibei 447)was studied in this paper. The citrus were treated with 0.5% konjac glucan-mannan+1% chitosan,and 0.5% konjac glucanmannan. Total sugar,titratable acidity,V_C,soluble solids,total phenolics,total flavonoids,MDA were taken as the index to evaluate the quality of the citrus during storage. The results showed that,the citrus coated with liquid could keep a good quality,and the citrus coated with 0.5% konjac glucanmannan+1% chitosan could significantly inhibit the decrease content of total sugar,titratable acidity,V_C,soluble solids,total phenolics and total flavonoids. It could also significantly inhibit the increase of MDA. It was proved that 0.5% konjac glucanmannan+1% chitosan was better than 0.5% konjac glucanmannan in fresh-keeping.