This study examined the links among Chinese American adolescents' (N = 96) global ethnic identity and their ethnic behaviors, ethnic identity salience, and psychological well-being based on daily diaries collected over a 2-week period. The daily association between engagement in ethnic behaviors and ethnic salience was positive regardless of overall ethnic identity. The daily-level association between ethnic identity salience and well-being, however, was dependent on adolescents' global ethnic identity. Among adolescents who were moderate or high in global ethnic identity, ethnic identity salience was consistently associated with positive well-being at the daily level. In contrast, the daily association between ethnic identity salience and well-being was less strong for youths who were low in ethnic identity. Additionally, a higher level of salience and a weaker association between salience and negative symptoms was found for girls than for boys, and older youths reported a weaker association between salience and positive symptoms than did younger youths.