Confidence-building is the maintenance of social order，society itself will be working improperly and will be a crisis，if interpersonal basic confidence-building are lost. Shenzhen is a typical city of immigrants，and the relationship of trust between persons are more likely to establish in the contractual relationship of trust and basis. Compact，although the lack of confidence or prevention，however，as the progress of the society and development，contractual relationships can foster social trust and sense of security compared with the personal-trust relationships. Using empirical research methods，the present study analyze the Shenzhen residents’ basic structure，property characteristics，as well as the interrelated，explore the relationship between them. The findings of the study data show that on the Compact concepts and interpersonal trust and security are significant related to urban residents’ interpersonal trust levels，and，and there is a correlation with their participation in public affairs.