Since the adoption of the UN Convention of the Rights of the Child in 1989, the right to participation has been recognised internationally as one of the general principles of children's legal status. It adds a new dimension to the existing and already problematic balance between the protection of the child victim and witness on the one hand and the fairness of the criminal proceedings on the other. In this article, we focus on the position of the child victim and witness in criminal proceedings and the complexity of the different roles he or she plays in this specific legal context, especially in child abuse cases: the child victim and witness that needs to be protected, the child as a vital source of information to the judicial authorities...