In this article, I discussed the roles of relation between mother and a child in their development. The mother-child relationship is based on many interactions between them from the birth of the child, and mother's interpretation of her child seems to be profoundly related with the close mother-child relationship. One factor causing the development of mother and a child is changes in relationship between mother and the child, because mother must found a new way of parenting to coordinate the child's view point and her own as the child grows up. The process of the coordination brings about development of both mother and a child.