〔Abstract〕 Objective Through the investigation of adult diabetics in the large community health service centers of Shenzhen Dapeng new district (hereinafter referred to as Dapeng community), to understand the current situation of medical care of diabetics in Dapeng community, and to provide data support for chronic disease management decision–making provided by Shenzhen Dapeng New District Government and Medical Group. Methods A total of 390 adult diabetics from 7 Dapeng communities from April 2019 to April 2021 were included in the study. A questionnaire survey was conducted and glycosylated hemoglobin (HbA1c) was detected. The patients were divided into two groups according to age: the young and middle-aged group was < 60 years old, and the elderly group was ≥ 60 years old. The questionnaire included gender, age, diabetes course, type of diabetes, medication, blood glucose monitoring and other medical history. Results The patients were mainly middle-aged and elderly female patients male accounted for 45.4 %; The mean age was (57.7 ± 9.7) years; Overweight, average body mass index (BMI) (25.1 ± 3.6) kg·m-2, accompanied by central obesity, average waist circumference (88.2 ± 9.8) cm; The mean duration of diabetes was (6.2 ± 5.2) years.The average HbAlc was (7.2 ± 4.0)% and the standard rate of HbA1c was 59.2%. Almost all patients (99.5%) were type 2 diabetes. 89.0% patients were receiving drug treatment, and oral hypoglycemic agents were mainly metformin, insulin–secreting agent, and α–glycosidase inhibition. 85.1% of the patients said they had received diabetes education. 67.2% of patients said they would conduct self– monitoring of blood glucose (SMBG). 30.1% percent of patients reported monitoring HbA1c annually. 34.4% patients had a history of hyperlipidemia, 8.7% had coronary heart disease and 4.1% had stroke. 28.2% patients had poor blood pressure control. From the age group, the proportion of young and middle–aged group patients was 57.4%. There was no significant difference in somatotype, standard rate of HbA1c, diabetes drug treatment, diabetes education, blood glucose monitoring and poor blood pressure control between the young and middle–aged group and the elderly group (P > 0.05). However, the proportion of the course of diabetes, the history of complications and the history of smoking and drinking in the elderly group was higher than that in the young and middle_x0002_aged group (P < 0.05). Conclusion This study for the first time showed a high standard rate of HbA1c and diabetes education rate in Dapeng community in diabetes management. In the future, Dapeng community needs to further strengthen the study of general practitioners, apply new oral hypoglycemic drugs according to the latest guidelines, increase the quality of diabetes education and support for diabetes patients, and further improve the management level of diabetes patients in Dapeng community.