This report aims to describe the current status of the national identity and provide appropriate suggestions to improve the national identity among residents in Beijing. 2289 data were collected by using questionnaire，the results of this survey showed that：Residents in Beijing had a relatively high sense of national identity；Nation identity showed significant differences in demographic variables，such as gender，marital status，age，work status and household registration location. In addition，this research collected 12948 comments from the Sina Weibo platform based on python and 3194 data were reserved after screening. The results showed that：During the Tokyo 2020 olympic Games，the national identity of Beijing residents is mainly manifested in four aspects：identity awareness，symbol awareness，national pride，and homeland feelings. Most comments on weibo convey national pride，residents in Beijing expressed their national identity through national pride.