Abstract: By measuring the flower-path, the vase life and the amount of water absorption of Chrysanthemum morifolium Ramat., the effects of the different concentrations of 6-BA and AgNO₃ on the preservation of Chrysanthemum morifolium Ramat. were studied with 30 g/L sucrose+75 mg/L citric acid as a control, and the appropriate fresh liquid formula was figured out. The results showed that the treatment with 6-BA and AgNO₃ could prolong the vase life of cut Chrysanthemum morifolium Ramat. Among them, treatment 1（30 g/L Sucrose+75 mg/L Citric acid+20 mg/L AgNO₃+0.5 mg/L 6-BA） could significantly increased the flower-path by 4.07 cm and slow down the aging process. Besides, the harm of water stress was reduced, and the vase life of cut chrysanthemum was increased to 31 days.

Key words: Chrysanthemum morifolium Ramat., 6-BA, AgNO₃, keeping-fresh, cut flower