Abstract: Preschool teacher's pedagogical tact is a kind of educational behavior by which the teachers deal with complicated educational situations and sudden educational problems in a timely and effective way in kindergarten's routine activities for the purpose of promoting children's development, and is an important embodiment of preschool teachers' professional development. 3-6 years old is a rapid period of children's physical and mental development, and the educational situation is complex and changeable, which requires preschool teachers to have certain pedagogical tact to better promote the development of children. Combined with practice, preschool teachers' pedagogical tact has significant practical, situational and creative characteristics. Kindergarten teachers' pedagogical tact can be divided into three parts from the process dimension:acuteness to educational situations, astuteness in judging educational problems and the tact in solving them. In practice, the improvement of teachers' pedagogical tact varies from person to person, and its generating path includes arousing preschool teachers' development consciousness, attaching importance to their action and reflection, and ensuring the external atmosphere of kindergarten.