In this study，2658 Beijing residents were investigated by means of national identity questionnaire，environmental satisfaction questionnaire and community attachment questionnaire. The purpose of this study was to investigate the status of national identity among permanent residents of Beijing and explore the relationship between national identity and community attachment，environmental satisfaction and social anxiety. The results showed following：1.the national identity of Beijing residents is at an upper level. 2.The residents of Beijing who are married，between the ages of 41 and 50，with formal jobs，believe in socialism with Chinese characteristics，have a bachelor’s degree，have no income or registered residence in Beijing city hasd the highest level of national identity. 3.The residents of Beijing who are cohabited，aged 21-30，unemployed，have other religious beliefs （Christianity，Catholicism，Buddhism，Taoism，etc.），the level of education is below primary school，the level of income is at 15001-20000 yuan or registered residence in Beijing rural areas had the lowest sense of national identity.