This study examined the communicative characteristicsuse of sign-, oral-, written-, and body-languageand communicative barriers within six families in which the parents were deaf and the children could hear normally. It explored family functioning and the current state of family services for such families. The children were found to have difficulty in understanding and performing sign and written language, and they experienced burdens and conflicts undertaking overwhelming duties. The research demonstrates the need for the system to support deaf families, particularly in providing a) educational programs to teach the Korean alphabet and sign language, b) family intervention, and c) professional sign language interpretation.