The changes that have taken place in recent years in Brazil have affected the structure of families, allowing children to play an important role in the purchasing decisions of the family group. Thus, the children's public has become a significant influence on the acquisition of goods and products, as well as the brands and models acquired by the families. Faced with this reality, the present study sought to identify the influence of the child on the family consumption decision in shopping at supermarkets in the city of Sant'Ana do Livramento / RS. For that, a quantitative approach was carried out, with descriptive character and Survey method. The data were collected with 115 parents of children aged between two and twelve years, with the collection of supermarkets and state schools in the city of Sant'Ana do Livramento. The results show that the children accompany their parents in shopping at the supermarket and participate in them, influencing the acquisition of certain products. In the same way, one can perceive the influence of the media in deciding what the children want to consume.