As a popular science activity brand with high public participation，wide coverage and great social influence，Beijing Science and Technology Week has become a landmark activity and an important carrier to promote the development of Beijing science popularization. In recent years，Beijing Science and Technology Week has continuously innovated in terms of the theme of the event，the content of the show，the form of the event，and the promotion of the event to meet the growing demand for popular science in the capital. This report mainly discusses the status quo of Beijing Science and Technology Week activity platform construction，sorts out the main characteristics and effects of Beijing Science and Technology Week，analyzes the experience of hosting Beijing Science and Technology Week，and proposes countermeasures to further strengthen the construction of Beijing Science and Technology Week platform.