Objective To explore the possible categories of diabetes patients with mild cognitive impairment, so as to identify the characteristics of various patients and provide reference for stratified management strategies. Methods The cognitive function and self-management ability of 235 mild cognitive impairment with diabetes patients were investigated byusing the Montreal Cognitive Assessment （MoCA), the Minimum Mental State Examination(MMSE) and the Diabetes Self-care Scale(DSCS). According to their cognitive function and self-management characteristics, patients were systematically clustered to determine the number of categories, and then K-means clustering was used for patient classification and feature analysis. Results The patients were divided into 4 categories:high cognitive low management group, low cognitive low management group, high cognitive high management group, and low cognitive high management group. There were significant differences in education level,patient source,work type,personal monthly income，medical insurance， and hypoglycemia frequency among the 4 groups (all P.<0.05). Conclusion There is heterogeneity in cognitive function and self-management ability among diabetes patients with mild cognitive impairment.It is suggested that medical staff should fully consider the characteristics of different categories on the basis of patient classification, and formulate personalized treatment and nursing plans for patients to prevent further disease development.