Abstract: Disclosed is a novel healthy and functional food having an obesity-suppressing activity. The healthy and functional food according to the present invention is manufactured by using an extract or a raw juice of purple-colored potato as a main/minor ingredient, or by adding the extract or a raw juice of purple-colored potato to various favorite foods. The extract of purple-colored potato according to the present invention has an obesity-suppressing activity by preventing an adipose cell from being differentiated and reducing leptin protein aiding to differentiate into adipose cells, and has an ability to reduce free fatty acid which is a hyperlipidemia-inducing factor and cholesterol in blood. Therefore, the healthy and functional food containing the extract of purple-colored potato according to the present invention can be useful to treat obesity patients including a wide age group of teenagers and adults and old persons.