Objective: To obtain the clinical basis for non-drug intervention in mild cognitive impairment (MCI) by exploring the efficacy of auricular acupuncture combined working memory (WM) training in patients with MCI. Methods: A total of 40 MCI patients who were hospitalized in the Department of Geriatrics at Hangzhou Wuyunshan Hospital from January to December 2023 were included and randomly divided into an observation group of 20 patients who received 3-week WM training and a control group of 20 patients who did not receive training by drawing lots. The Montreal Cognitive Assessment (MoCA) was used to evaluate the patients' cognitive function. Results: Before training, there was no significant difference in cognitive function between the two groups(P>0.05). In the observation group, the visual-spatial and executive ability and MoCA total scores of patients followed up for 6 months after training were higher than those before training, and the difference was statistically significant (P<0.05). After training, followed up for 6 months, the visual-spatial and executive function and MoCA total scores of patients in the observation group were higher than those in the control group, and the difference was statistically significant (P<0.05). Conclusion: Auricular acupoint stimulation combined with WM training can improve some cognitive functions in MCI population.