After World War II，“Development” became the theme of the times.In recent ten years，“Cultural Development” has become one of the hottest topics in the academic and policy articles in both theory and practice field of domestic and international research.However，what is “Cultural Development”？This is seldom defined.This article concludes development/modernization theory and cultural research theory，then analyzes some basic issues such as what “culture” is，what “development” is，what “cultural development” is，etc.This analysis intends to roundly grasp the concept and significance of “cultural development”，which is expected to clear and increase our awareness of “cultural development”，in order to contribute to promoting China’s cultural development and prosperity.