Background: Diabetes self-management which includes a holistic lifestyle, medication adherence, and self-monitoring glucose levels, allows individuals with diabetes to maintain optimal, tailored glycemic control. The aims of the study to assess the patient’s information about diabetic self-management. Methodology: A study design that was descriptive was used in Al-Wafaa primary health care center for diabetes and endocrinology in Mosul city. Purposive sampling technique used to select (383) male and female patients with diabetic type II who aged 20 years or more. Data were collected through a face-to-face interview from period 20 November 2023 until February 15, 2024. The study used developed diabetic self-management scale to assess patients’ information. Results: the study found the patient’s information about diabetic self-management were good except the information about blood glucose monitoring was inadequate It appeared that most of the answers were mean rank (I don’t know), (9.25), followed by the correct answers (7.75) and finally the incorrect answers (2.5). Conclusion & recommendation: The researcher concluded that the patient’s information about diabetic self-management were good except the information about blood glucose monitoring was inadequate. Diabetic patients should be encouraged to understand diabetes self-management and adhere to all medical recommendations and guidelines from the doctor and health educator, especially adherence to treatment and self-monitoring of blood sugar.