Emotional memories persist within individuals and over generations. Past research has examined functions of parent-child memory sharing, but little work has assessed how the emotional qualities of memories are transmitted from parent to child and whether emotion transmission relates to memory content transmission. An understanding of how emotional memories are transmitted may be particularly important during adolescence, a developmental period marked by heightened sensitivity to emotional information, increasing independence from caregivers, and the emergence of mental health symptoms. The current study investigated the intergenerational transmission of parents’ autobiographical emotional memories to their teen offspring in healthy dyads using behavioral measures and natural language processing tools. We found that emotional valence and arousal linked to parents’ memories are transmitted from parent to teen. Greater parent-teen agreement in valence ratings was associated with greater parent-teen overlap in both subjective vividness ratings and objective memory content of individual memories. Subjective memory transmission was modestly related to lower mental health symptoms in teens after accounting for parent symptoms. These findings demonstrate that parents’ emotional memories are transmitted to their teens and provide preliminary evidence that autobiographical emotional memory transmission from parents could be a protective factor for mental health in adolescence.