The educational characteristics of mixed classes are: (1) arranging daily life schedule scientifically. Because the children in the mixed class are different in age and their physical and psychological levels, it is necessary for teachers to take into account the needs of children of different ages and scientifically arrange El life schedules. (2) Stratified and grouped education to promote the improvement of the original level. Kindergarten teachers should take care of the characteristics of children of different ages in daily life, study and games. In order to educate them with different contents in one day's activities, it is necessary to adopt various methods to carry out teaching activities according to different teaching contents and children's characteristics. (3) Give full play to the advantages of mixed age and let children educate their children. Older children and younger children in mixed classes need a long adaptation process in their first contact, and communication is limited by different levels of physiology and psychology. If children's language skills are limited, they can't communicate with older children with strong language skills. However, after the children are familiar with it, the children in mixed classes show some behaviors that children of the same age can't show in interpersonal communication. For example, children have a natural sense of worship and dependence on older children, which enables children of different ages to help each other and improve together in mutual communication. For example, brothers and sisters will learn to be adults and help their brothers and sisters dress and tie their shoes.