Based on the characteristics of role cognition of 3-6-year-old preschool children, the strategy and scheme of interactive design of educational games for preschool children are discussed. First of all, the current situation of children’s educational game interaction design at home and abroad is introduced, and some excellent educational game cases are analyzed. Then, according to the characteristics of preschool children’s cognitive development and the art theory of game design, three principles and the framework of interaction design of children’s educational game characters are summarized and verified in practice. The framework and three principles of role interaction design are defined, and, through concrete creation practice, the applicability of role cognition in the interaction design of preschool children’s educational games is verified and a new idea for the interactive design of children’s educational games is provided.