With the China's continuous urbanization process, there has been a fundamental shift in the structure of the floating population from individual migration to family migration driven by the educational needs among migrant adolescents. In this context, this study was conducted to identify the effects of parent-child relationships, peer relationships, school climate, and ego-resilience on the migrant adolescents’ school adjustments. In specific, the study was aimed to investigate whether there was a mediating effect of ego-resilience on the relationship between the relationships with their parents and peers, school climate, and school adjustments among migrant adolescents. A survey was conducted targeting migrant adolescents in middle and high schools located in Shandong Province, China, and the data were collected from a total of 444 migrant adolescents. Statistical analysis was conducted using SPSS 26.0 and AMOS 24.0 programs. The study found that both parent-child relationships and school climate have a significant positive effects on the school adjustment of migrant adolescents, and ego-resilience plays a significant mediating role in the influence of parent-child relationships, peer relationships, school climate, and school adjustment among migrant adolescents. Based on ...