Abstract:【Objective】To investigate the changes in serum tumor markers carcinoembryonic antigen (CEA), carbohydrate antigen 72-4 (CA72-4) and CA153 in patients with postmenopausal type 2 diabetes mellitus (T2MD).【Methods】A total of 105 postmenopausal women with T2MD were selected as the observation group, and 94 healthy women of the same age were selected as the control group. The fasting plasma glucose (FPG), postprandial 2h blood glucose (2hPG), glycosylated hemoglobin A1c (HbA1c) and levels of CEA, CA72-4 and CA153 were compared between the two groups.【Results】The levels of FPG, 2hPG, HbA1c, CEA, CA72-4 and CA153 in the observation group were higher than those in control group, and the differences were statistically significant (P<0.05). Levels of CEA, CA72-4 and CA153 were lower in T2MD patients<65 years old than those patients ≥ 65 years old, and the difference was statistically significant (P<0.05). The CEA, CA72-4, and CA153 in HbA1c<7% T2MD patients were lower than those in HbA1c 7% ~ 9% and HbA1c>9% T2MD patients, and CEA, CA72-4 and CA153 levels were lower in T2MD patients with HbA1c of 7% ~ 9% than those with HbA1c>9%; the differences were statistically significant (P<0.05). The levels of serum CEA, CA72-4 and CA153 were positively correlated with FPB, 2hPG, HbA1c and age (P<0.05).【Conclusion】Compared to postmenopausal women with normal glucose metabolism, levels of serum CEA, CA72-4 and CA153 are higher in postmenopausal women with T2MD, which may be related to the fluctuation of blood glucose.