Objectives: To determine the proportion of using functional foods of women to examine at the health center of Tuy An district, Phu Yen province in 2017 Methods: This is a cross sectional descriptive study, using questionnaires to directly interview 373 women who came to the health center of Tuy An district, Phu Yen province in 2017 Results: The proportion of using functional foods was 23.1%, in which 87% of women were satisfied with efficiency of functional foods and 52.3% of women were going to continue to use functional foods.