The current study adopts Mark Orbe’s co-cultural theory as the research framework and aims to understand the communication approaches and orientations used by Taiwanese same-sex families to negotiate their family identities with the outside world. After conducting a series of long-term in-depth interviews within two years with five lesbian and three gay parents of same-sex families, the researcher found that the interviewed same-sex families tended to use co-cultural communication approaches, such as “assertive,” “non-assertive,” and “aggressive.” It is expected to achieve the results of “accommodation” and “assimilation” of family identity negotiation. The study suggests that the theoretical framework of cocultural communication should take into account the concepts of "intersectionality" and "atypical prototype" of minority groups in order to become more solid and comprehensive. The findings of the research also reflect the importance of “thick intersectionality” and “intersectional hierarchy invisibility” of the interviewed samesex parents in shaping the negotiation process of their family identities.