The study was to test hypothesis that social support and family function affect on life satisfaction, suggested the policy implications. I established research model based on reference review and took a questionnaire on the life satisfaction to the middle-aged and old-aged people over the age of fifty, who live in G city among the attendants at the program that was held by the local government. According to analytical results, social support and family function affected on social participation and life satisfaction. This study suggested theoretical and policy implications based on analytical results.