Abstract: The contents of cAMP and cGMP in fruit skin, flesh, leaves and stem of bearing shoot of 26 Chinese jujube cultivars were analyzed using HPLC. The results showed: Firstly, fruit skin has the highest contents of cAMP and cGMP in the four organs, followed by flesh and leaves, with the lowest contents in
stem. Secondly, the highest contents of cAMP and cGMP were in compete-mature period, while the lowest in white-mature period. Thirdly, thereps a highly significant difference in contents of cAMP and cGMP among different varieties. For examp le, the content of cAMP in Nanjing Yazao( 553 155μg·g^{- 1}) is as 12 times as that in Guanyang Changzao (46165 μg·g^{- 1} ) , while the content of cGMP in Binxian J inzao (201 115 μg·g^{- 1}) is as 23 times as that in Shandong L izao (8186μg·g- 1 ). Fourthly, the content of cAMP was always
higher than that of cGMP in the same material, and they have similar changing rules in different organs and growing periods.

Key words: Chinese jujube, cultivar, organ, growing period, cAMP, cGMP