the “social anxiety” refers to diffused tension among the members of the society，namely a feeling of worry due to uncertainties in society（such as competition，social change，social reform，the unsafe factors）. Combining the psychological and sociological perspective，this study adopted self-designed social anxiety questionnaire，basic information questionnaire and standard psychology scale including Self-rating Anxiety Scale（SAS），Coping Style Questionnaire，Perceived Stress Scale，and randomly surveyed 1093 residents in Beijing，of 18 to 63 years old，from various communities，to describe the current social anxiety level，sources of social anxiety，and influencing factors of social anxiety among Beijing residents. We obtain the following results：

First，the scores of general anxiety symptoms in Beijing residents are much higher than the Chinese norm，and the incidence of mild and above anxiety is as high as 61.44%.

Secondly，Beijing residents have significant social anxiety，and there is significant anxiety about various uncertainties in social life. Among them，environment and safety anxiety and survival anxiety are the most prominent.

Thirdly，social anxiety demonstrates significant differences depending on different demographic characteristics and social-economic features：（1）women’s social anxiety is significantly higher；（2）31～50 years old group’s social anxiety is significantly higher；（3）the general staff worked in governments，enterprises and institutions has the highest level of social anxiety；（4）residents with monthly income of more than 6 thousand yuan have significantly lower social anxiety；（5）when the small family housing property area per capita reaches a certain standard，social anxiety decreases significantly；（6）the larger the size of small family，the higher the social anxiety；（7）the longer the commute time，the higher the traffic anxiety.

Last，the individual physical and psychological factors have a certain influence on the social anxiety：（1）the worse the physical condition，the higher anxiety for the development of country and policy and survival anxiety（especially for medical anxiety）；（2）the positive and negative coping positively predict social anxiety level.

In short，Beijing residents demonstrate high popularity of anxiety and significant social anxiety，and the social anxiety is influenced by a variety of demographic characteristics（gender，age），socio-economic characteristics（occupation，economic and housing situation，small family size），and physical characteristics（such as health condition，positive and negative coping）. The results of this study can provide reference for further monitoring and intervention of social anxiety.