As an important form of family education, intergenerational education has been widely concerned by all walks of life. Compared with parent-child education, this education mode has some disadvantages, which affects the development of preschool children’s behavior and emotion.Through literature method, questionnaire method, interview method, understand the grandparents of education idea, education content, education method, analysis of intergenerational education influence factors on children’s behavior, and put forward targeted Suggestions, to help young parents understand the disadvantages of intergenerational education, enhance the consciousness of parental education, improve the intergenerational education problem, to better promote the development of preschool children’s body and mind health.