This research is based on the questionnaire data with 7139 residents in 28 provinces in 2008. It evaluates sense of safety in seven aspects，i.e.，personal and family property，personal life，traffic，medication，food，job，as well as personal information and privacy. The factors that may impact the sense of security were analyzed，including gender，age，social-economic status，regions，etc. The differences between the two surveys in 2006 and in 2008 were compared. Generally speaking，the security assessment is given higher by the elderly，the lower educated，the rural residents，the local residents，and people in stable marriage，than by the younger，the higher educated，the urban residents，the local residents，and people who experienced instability in marriage.