The perception of social security is the subjective feeling about the social operation mechanism of the country，the social security situation，and the stability of their own life. In order to give an objective presentation about the perception of social security of our country，the Social Survey Center of Public Opinion Research Laboratory in Shanghai Jiao Tong University conducted a survey on overall social security，food security，medical security，personal security，property security，and privacy security. The survey results showed that male respondents’ social security was higher than female respondents’；residents above 60 years old had a higher perception of social security than their younger counterparts；the social security differed among respondents with different monthly income；respondents from non first-tier cities had a higher perception of social security than the respondents from the first-tier cities；the social security perception differed among respondents engaged in different occupations.