Abstract: 【Objective】 With the flat nucleic acid in anti-split date varieties and Jing jujube 39 in easily cracked date varieties as study subjects, cell wall metabolic enzyme activity in the pericarp of jujube was determined to reveal the relationship between cell wall metabolic enzyme activity and split-resistant fruit. 【Method】 The activity of cell wall metabolic enzymes in different parts of jujube peel was determined during the growth process, and the difference of cultivars cell wall metabolic enzyme activity between split-resistant and split jujube was compared. 【Result】 Results showed that the activities of superoxide dismutase, peroxidase and polyphenol oxidase in the split-resistant cultivars pericarp were significantly or extremely significantly higher than those of susceptible jujube varieties during the different periods, while catalase activity was significantly lower in different parts at the green maturity stage. 【Conclusion】 POD and PPO activities in the shoulder nightside of easily-cracked cultivars pericarp were extremely significantly lower than those of crack-resistant cultivars at white mature stage , while at the rest time, POD, PPO activities in other parts of crack-resistant cultivars were extremely significantly higher in the different parts at different time than those easily-cracked cultivars pericarp. CAT activity was significantly lower in different parts at Green time, but it was higher at different time.The activity of CAT in shoulder nightside of pericarp of susceptible cultivars was significantly higher than that of resistant cultivars at green maturity stage, while that of resistant cultivars was higher than that of susceptible cultivars in other periods.