Carbon, nitrogen and phosphorus transport within the fruit tree are complex processes involving source-sink interactions. Understanding the difference of leaf stoichiometry between fruiting branches and vegetative branches of winter jujube (Ziziphus jujuba Mill. cv. Dongzao) can provide sight into the source-sink relationship. The study investigated the seasonal dynamics and the difference of the leaf stoichiometry between vegetative branches and fruiting branches of winter jujube. The study investigated the seasonal dynamics and the difference of the leaf stoichiometry between vegetative branches and fruiting branches of winter jujube. The results showed that the leaf C content was significantly higher (p<0.05) in the fruiting branch than in the vegetative branch in most growth stages except for the Full flowering stage. The leaf N and P contents were both higher in vegetative branch than in fruiting branch in most growth stages, but only in a few growth stages, these differences reached a significant level. There was a significant correlation between the leaf stoichiometric indices examined such as N and