Inclusion Criteria:  Patients with HIV infection combined with prediabetes who are not treated with antidiabetic drugs Fasting blood glucose of 6.1-6.9 mmol/L or 2-hour oral glucose tolerance test of 7.8-11.0 mmol/L BMI >24 kg/m2 and no more than 10% weight fluctuation in 3 months HIV-infected patients must be on antiretroviral therapy, no significant symptoms, have HIV RNA below the lower limit of detection for 3 consecutive months, and have CD4 cells greater than 200/uL  Exclusion Criteria:  Patients with diagnosed diabetes Those who are unwilling to participate or unable to cooperate The patient has had an acute heart attack or cardiovascular disease in the last three months Positive pancreatic islet autoimmune antibody History of pancreatitis or pancreatic cancer Pregnant or breastfeeding women Liver function aminotransferases greater than 2 times the upper limit of the normal range Patients with previous recurrent urinary tract infections Glomerular filtration rate <45ml/min/1.73m2 Other serious co-morbidities