The effect of different concentrations of Spm on the physiological and biochemical changes (spermine) (0, 0.1, 0.2, 0.5 mmol•L^(-1)) in the leaves in green bud, florescence period and configuration of florescence for chrysanthemum "Jianliuxiangju" were studied. The results showed that Spm could improve the activities of NR, POD, SOD in the leaves in green bud, and increase the contents of chlorophyll and soluble protein. The diameter of flower, diameter of stalk and height of stalk of the treatment were higher than that of the control, the appearance of stalk type were more beautiful. The effect of 0.1 mmol•L^(-1) Spm was the best, it made the chrysanthemum bloom 3 days in advance, and prolong the period of blossom for 10 days.