中文摘要：

根据西安交通大学人口与发展研究所2005年对深圳农民工的调查数据，以网络规模和有无弱关系分别代表农民工社会支持网的数量和质量特征，分析了社会支持网络的现状及其影响因素。现状分析表明，农民工发生流动后，其社会支持网的网络规模显著变小，以强关系为主；影响因素分析表明：经济地位对于社会支持网的数量和质量均产生影响，流动经历和工作转换经历这类经验性因素对农民工社会支持网的数量特征具有影响，而农民工个体的个人属性、人力资本状况和后天的学习适应能力对其社会支持网络的质量特征也产生重要影响。

英文摘要：

Using the data from the survey on rural migrant workers conducted in Shenzhen by Institute for Population and Development Studies of Xi＇an Jiaotong University in 2005, this paper analyzes current situation and determinants of rural migrant workers＇ social support networks, in which quantitative and qualitative features are measured by the size of network and the item whether there is a weak tie respectively. The results show that, after migration, the size of social support network becomes smaller significantly, and strong ties dominate. The analysis of determinants reveals that economic status affects both quantitative and qualitative features ; factors of the experience nature such as experiences in migration and job - changing affect the quantitative feature of the support network for rural migrant workers; individual attributes of rural migrant workers, situation of human capital, acquired study capability and adaptability have significant impact on the qualitative feature of the social supporting network.