Abstract:By the methods of spraying leaves and root drench with paclobutrazol (PP333),chlorcholinchlorid (CCC) or mepiquat chlorride (DPC) in different concentrations,through the test of the morphological indices(plant height,inernod length,leaf length and width,length of flower shoot,pedicel length,flower diameter and flowering date) and the physiological indices (chlorophyll content,photosynthesis rate,transpiration rate,enzymatic activity and the sugar soluble content in potted rose leaves),study the effects of PP333,CCC and DPC on the growth and development of the potted rose (‘Shijizhichun’).The results showed that：Firstly,it had the different influence to the morphological and physiological indices of potted rose,using retardants with different concentrations and ways.Under the treatments with appropriate concentrations and ways,the plant height could be decreased through shortening inernod length,the plantype was compact,the plants blossom normally.Therefore,the plant value of view was increased.At the same time,they also could increase plant chlorophyll content,improve the photosynthetic efficiency and increase SOD,POD activities and the sugar soluble content in plant leaves.It had a significant effect on the ornamental quality of potted rose.Secondly,the treatments by spraying leaves with 700 mg·kg-1 PP333 and by drenching the roots 300 mg·kg-1 PP333 obtained the best results.By spraying leaves with 1 200 mg·kg-1 CCC and 300 mg·kg-1 DPC got better results.They could decrease the plant height and improve the plant value of view.