Objective To investigate the use of oral anti-diabetic drugs and sugar blood control situation in advanced aged patient with diabetic mellitus in a community health centre in order to provide references for rational drug use. Methods A cross-sectional survey about oral anti-diabetic drugs was carried out in senile diabetic patients who visited the community health centre and established complete health documents voluntarily from February 2012 to February 2013. Results There were 176 cases of advanced aged patients with type 2 diabetic mellitus, of which, 107 cases were female and 69 cases were male, whose age ranged from 80 to 94. Among 176 cases, there were 107 (60.80%) patients with type 2 diabetic mellitus combined with hypertension, chronic heart diseases, and stoke; 155 had oral anti-diabetic drugs (88.06%). 67.19% of patients who took one oral anti-diabetic drug chose α-glycosidase inhibitors, followed by sulfonylurea. 53.73% of patients who received combination therapy chose glycosidase inhibitors and sulfonylurea. For the treatment of anti-diabetic drugs, 73.68% of patients met the criteria (fasting blood sugar: no more than 8.0 mmol/L), with control rates of 73.56% for α-glycosidase inhibitors and 72.58% for sulfonylurea. More than half of the patients could not be evaluated for their glycosylated hemoglobin levels were not tested. Conclusion Doctors working in community health centres should choose oral anti-diabetic drugs according to patients’ own conditions when treating advanced aged patients with diabetic mellitus in order to avoid adverse reaction such as hypoglycemia. Glycosidase inhibitors are the mostly used drug in the community health centre because it is safe with less adverse reaction when used in senile people and it could ideally control their blood sugara.