Background: Monitoring of home blood pressure has been shown to provide more reliable assessment of blood pressure and leading to more appropriate diagnosis and treatment. However, the role of each component of home BP monitoring for prediction of target organ damage is not clearly elucidated. Methods: We investigated the association between the each component of home BP and target organ damage (TOD). We assessed the urinary albumin/creatinine ratio (UACR), left ventricular mass index (LVMI) as measures of TOD in 189 hypertensive subjects. Urinary albumin/creatinine ratio was log-transformed and analyzed by Pearson���s correlation.Conclusion: These findings indicated that, monitoring of home blood pressure, especially systolic blood pressure provide valuable information for predicting target organ damage in hypertensive patients.