To evaluate the change of self-care knowledge of the outpatients with type 2 diabetes having treatment at Yenbai Provincial Hospital of Endocrinology in 2018 after health education. Subjects and methods: Intervention study on the same group of subjects with comparison before and after was conducted. Data were collected by directly interviewing 108 people with type 2 diabetes for outpatient examination and treatment at Yenbai Provincial Hospital of Endocrinology from January to April, 2018 with self-assessment questionnaires of diabetes self-care. Direct consultation was taken in small groups of 2 - 4, the content of the consultation is based on the American Diabetes Association's self-care recommendation (2017) and guidelines for the diagnosis and treatment of type 2 diabetes by the Ministry of Health (2017). Results: Before the intervention, the rate of patients with self-care knowledge was . After the intervention, the rate of patients with self-care knowledge rose up to . The average knowledge score was ± before the intervention and up to ± of a total of 30 points after one-month intervention. | Changing self-care knowledge of the outpatients with Type 2 diabetes having treatment at Yenbai provincal hospital of endocrinology in 2018 after health intervention