Abstract
This study aims to clarify the features of preschool teachers' understanding of children, focusing on how preschool teachers interpret and evaluate the children's characters in daily practice. The data is based on the reflections of two preschool teachers after their practice. As for results, first, the preschool teachers have a tendency to understand the children in the context the children's development. Second, the preschool teachers' sense of the children's problems functions as the perspective from which they attemp to understand the children. Third, it is suggested that understanding the children improves the preschool teachers' expertise. Such mutual development is a feature of preschool teachers' understanding children.