Purpose: To test the effects of health education on the blood pressure, knowledge, and self-care of visiting nursing clients. Methods: The study subjects were 96 participants who had been diagnosed with hypertension or had high risk factors for hypertension among those registered at a public health center in Seoul. The education program was individualized and delivered to enhance the management of hypertension including life-style modification, medication, and complication managements. Data were collected using questionnaires from May to December 2006 and analyzed using descriptive analysis, t-test, paired t-test, and ANOVA. Results: The blood pressure of the participants after the education was significantly decreased compared to before the education. Education also significantly affected the increases of knowledge of the disease and self-care capability. However, the blood pressure and self care were not significantly improved for the age group over 85 years. Conclusions: This study proves that the individualized health education for visiting nursing clients was effective in improving blood pressure, knowledge, and self-care of hypertension. However, it is necessary to develop strategies that are specifically targeted at particular age groups in order to improve the capability of self-care of hypertension.