In parenting education, there always exists between parents and children, and sometimes I don't feel it myself. In fact, there is a hidden education in parents' life, Montessori education, which is carried out in kindergarten, just like a teaching school. In this kind of teaching, it is a mixed-age teaching model, that is, children of different ages live together in the same group, and the teacher adjusts their learning progress according to their age. Some content is studied individually, and some is studied collectively. In this group, older children can help younger children and cultivate the character of mutual assistance. Young people also have references in their studies.