The present invention relates to a technique of managing a lifestyle, and the present invention is directed to provide a system and a method for designing a lifestyle service which collects big data of personal lifelogs, collects analysis of personal activities through the collected lifelogs, and estimates possible user's behavior based on the collected analysis of personal activities to induce the user's behavior in a preferable direction which may improve quality of life according to the estimated user's behavior to manage the user's health.