Autism spectrum disorder (ASD) is known as a communication disorder. There is a shared feeling between the mother and the child in terms of the difficulties encountered in ASD. When the mother and the child with ASD experience repeated cycles of conflict and trial and error, the qualitative levels of the shared context of communication become comprehensive. The subject, which is the change in communication, is a context that arises in the parent and child’s whole unit. Synchronously, the context about how to understand the communication between the parent and child becomes comprehensive. We propose that the dialogic partner’s context and mother-child’s context evolves in synchrony. When the object of nursing becomes a unit, including the nursing care provider, nursing can be asserted as a change of relationship in the interaction between the nursing care provider and the mother and child.