The present cross‐temporal meta‐analysis involving 68 studies (n = 35,499) found that Chinese adolescents' scores on the Rosenberg Self‐Esteem Scale decreased substantially from 1996 to 2009. The decline of self‐esteem across birth cohorts was associated with the slide of social connection level of Chinese adolescents. Correlations between self‐esteem and corresponding social indicators like the floating population and divorce rate were significant. Analysis on self‐esteem age differences showed that self‐esteem development in China was different from Western results: self‐esteem scores followed a roughly increasing trend from Grade 7 through Grade 12 with double dip points at Grades 7 and 11.