Abstract: This paper deals with the size and relations constitute of the land-lost peasants’ social support network based on 202 survey in Jiaxing, Study found that the social support provided by land-lost peasants’ own social network play an important role to resolve the difficulties after land acquisition and resettlement, however, strong support for expressive, weak support for instrumental; kinship plays an important role in social support, the role of non-genetic relationship is relatively weak; different social relations provided different social support; Subject to social status, the heterogeneous of network and the degree of social resources control, the support and resources provided by land-lost peasants’ social networks are more limited and need for institutional support eagerly.