Abstract: Experiment was conducted with small flowers in Chrysanthemum of “A23” 、“A8”and“A27”.The changes of modality chraceristic of leaves, the relative water content (RWC) ,MDA content and dry weight were studied under drought stress.The results indicated that the wilted time , the decreased extent and process of the relative water content (RWC) were all different in three cultivars.The content of MDA raised first,declinedd then,and increased continually later.The growth was restrained both in leaves and roots,but the value of root/crown was raised under drought stressed. The conten of dry material was different in the organ and cultivars.Integrated analysis showed that A27 had the strongest adatability under drought stress with the late time of wilted ,slower decreased process of RWC, low extent and content of MDA,and little range of dry material content changed.