Childhood is an important age for physical growth. The growth of children under the age of five is so fast that they need to eat foods that are in line with their needs. The purpose of this study was to examine maternal knowledge and the relationship between nutrition and nutritional status in young children. This research is a literature review with a descriptive research method and library research where this research tries to explain the real things, which are happening now or in the past. This article examines maternal knowledge and the relationship between diet and nutritional status in child stunting. Based on studies from many previous studies, it is known that the level of knowledge of mothers about nutrition is effective in supporting the nutrition of their children. It is assumed that mothers who have good knowledge about food choose the right food for themselves and their children.