PURPOSE: This study was aimed at identifying levels of compliance of patients with metabolic syndrome and the factors influencing their compliance. METHODS: Data were collected from patients with metabolic syndrome at K medical center in 2009 using questionnaires. The data were analyzed using ANOVA, t-test, Scheffe test, Pearson correlation, and stepwise multiple regression. RESULTS: The mean score of health behavior compliance was 2.82 (range: 1.43~3.87). Of the factors significantly influencing compliance with health behavior, health perception, exercise efficacy, age and perceived severity explained the 42.8% variance of compliance with health behavior. The factor explaining the highest level of variance was health perception. CONCLUSION: It is essential for health professionals to consider the aforementioned four factors when developing interventions to increase compliance with health behavior of the patient with metabolic syndrome.