To observe the immediate effects of auricular acupuncture combined with lumbar Jiaji points (EX-B2) in the treatment of acute lumbar discogenic pain, and to provide new ideas for clinical treatment of lumbago. Methods:A total of 90 patients with acute lumbar pain who were admitted to our hospital from January 2016 to December 2016 were enrolled in this study. In accordance with the order of treatment, the selected patients were divided into observation group and control group, 45 cases in each group. There were no statistical differences in age, gender, course of disease of two groups (P>0.05), which meant they were comparable. The control group was treated with normal acupuncture in Jiaji (EX-B2), and the observation group was added magnetic auricular plaster treatment based on control group. The McGILL scores, JOA score of low back pain and Oswestry disability index score of patients 30 min before and after treatment were recorded respectively. Enzyme linked immunosorbent assay (Elisa) was used to detect the concentrations of five HT (5-HT) and beta endorphin (β-EP) in the peripheral blood of the patients 30 min before and after treatment. Results:The differences in McGILL, JOA low back pain score and Oswestry disability index score efficacy of two groups before and after treatment were not statistically significant (P>0.05), which meant they were comparable. After treatment, the scores showed improvement after treatment, but the score of the observation group was significantly better than the control group with statistically significant difference (P<0.05). Before treatment, the difference in 5-HT content in the blood of two groups were not statistically significant (P>0.05). After treatment, 5-HT of two groups was found significantly increased, and that in treatment group was better than in control group (P<0.05). Before treatment, the difference in beta-EP content of two groups were not statistically significant (P>0.05). After treatment, it was found that beta-EP contents of two groups were significantly decreased, and the decrease in observation group was larger than that in the control group (P<0.05). Conclusion:For Auricular points combined lumbar Jiaji point (EX-B2) in the treatment of discogenic low back pain, the immediate effect of the acute exacerbation of patients showed that it can improve the overall symptoms and pain/limb function, and the effect and possible mechanism might be related with 5-HT and beta-EP changes.