中文摘要：

采用整群取样方法对选自北京市的1164名流动儿童进行问卷调查，考察社会支持、社会认同在歧视知觉与社会文化适应关系中的作用。结果表明，流动儿童的歧视知觉整体上并不明显，其社会文化适应状况整体良好；歧视知觉对社会文化适应有显著负向预测性（β=-0．39，p〈0．001）；在歧视知觉与社会文化适应的负向预测关系中，社会支持起部分中介作用，城市认同有增强作用，老家认同有缓冲作用；社会支持的中介作用受到城市认同、老家认同的调节。

英文摘要：

Presently in China, there are about 19.82 million children under 18 years who migrated with their parents from rural areas to the cities. Literature suggested that a majority of migrant children once suffered discrimination from some of urban residents and their schoolmates. It is widely accepted that exposure to discrimination is a risky factor for psychological and behavioral problems and there are several theoretical perspectives to explain how stigma influences individual adaptation. For instance, Phenomenological variant of ecological systems theory is presented as a theoretical framework to integrate issues of context （eg. discrimination）, coping, and identity in human development. Social support deterioration model indicates that certain types of events, especially traumatic or stigmatizing events, lead to a decrease in effective social support, which further leads to an increase in psychological distress. Social identity theory suggests that recognition of dominant group discrimination against one＇s social group increases in-group identification in an effort to maintain a positive self-image. This study was aimed to explore the effect of social support and social identity on the relationship between perceived discrimination and socio-cultural adjustment among Chinese Migrant Children. We would examine four hypotheses： （1） Perceived discrimination was negatively correlated with socio-cultural adaptation; （2） Social support would partially mediate the association between perceived discrimination and socio-cultural adaptation; （3） Social identity would moderate the relation between perceived discrimination and socio-cultural adaptation; （4）The mediating effect of social support could be moderated by social identity. Based on cluster sampling, 1164 migrant children from 5 public schools and 1 migrant children school in Beijing were recruited to participate in this study. Data of demographic information （including gender, grade, school types, social economic status）, perceived di