In order to study the transpiration characteristics of matured jujube tree and their transpiration difference of different tree-ages, the transpiration of jujube tree were monitored continuously for three years with TDP sap flow monitoring system. The results indicated that the change of daily jujube transpiration showed a single peak trend, and the trend of narrow peak-wide peak-narrow peak appeared with the change of growth periods. Timelag phenomenon and threshold existed distinctly in jujube transpiration influenced by VPD and PAR. The upper thresholds of VPD and PAR responding to the transpiration were 3.5kPa and 1000~1200μmol/(m2·s). Daily jujube transpiration showed a single peak trend obviously during the whole growth period, the proportion of nighttime transpiration was about 5%~33% of the fullday transpiration. The order of jujube transpiration from large to small was 3a, 5a and 12a during 2012—2014. The significant differences were found between transpiration (p>0.01), and the interannual variations (Cv) of transpiration were different. The transpirations of 12a jujube were not significantly different among years (p>0.05), annual water consumption was basically stable at 293~334mm. Thus, the jujube transpiration scale gradually expanded with the increase of ages, but it could remain stable relatively by taking reasonable pruning measures.