The protection of the mental health of black and other ethnic minority children and young people has not received adequate attention in the literature. This paper considers, describes and discusses the concept of culturally competent practice. Ways in which practitioners can better understand the needs of children in a multicultural, diverse society and intervene in more effective ways are assessed. Finally, the components of a culturally competent practice to support families in the protection of children's mental health are summarized, together with the implications for practice. Copyright © 2002 John Wiley & Sons, Ltd.