The objective of this study was to survey the photosynthetic characteristics of wild jujube under different NaCl stress(0, 4, 8 and 12 g·kg^-1)with exogenous different ALA concentrations (75 and 150 mg·L^-1). The results showed that: (1) the exogenous ALA increased net photosynthetic rate (P_n), intercellular carbon dioxide concentration (C_i), stomata conductance (G_s) and chlorophyll content significantly under the treatments with the different NaCl treatments. (2) Under the different NaCl treatments spraying 75 mg·L^-1 concentrate ALA increased T_r significantly only under 4 g·kg^-1 and 8 g·kg^-1 NaCl concentrate treatments; spraying 150 mg·L^-1 concentrate increased P_n, C_i and T_r significantly. (3) In 12 g·kg^-1 NaCl concentrate treatment, spraying 150 mg·L^-1 concentrate ALA increased chlorophyll content significantly, but spraying 75 mg·L^-1 concentrate ALA had no significant effect on chlorophyll content. It showed that under the NaCl stress, exogenous ALA can improve wild jujube leaves photosynthetic gas exchange parameters, increase chlorophyll content to relieve the NaCl stress and improve photosynthetic capacity, and spraying 150 mg·L^-1 concentrate ALA had better effect to relieve the NaCl stress.