It is of great significance to the education of preschool children with mental retardation. First of all, it helps to improve children's basic quality. Children with mental retardation can gradually develop their basic cognitive, linguistic, social and self-care abilities by receiving special education and training at preschool stage. The improvement of these abilities has laid a solid foundation for their future study and life, making them more confident and brave in the face of challenges.

Secondly, the education of preschool children with mental retardation helps to promote social integration. When these children receive proper education and training, they can better integrate into society and establish good relations with others. This integration will help to build a more inclusive and understanding social environment, which is very important for mentally retarded children and their families.

In addition, the education of preschool children with mental retardation can also reduce the pressure on families. For families with children with mental retardation, educating and caring for these children may bring great pressure. By providing appropriate education and training as early as possible, the pressure on families can be alleviated, because children can get professional education and care at school.

Finally, the education of preschool children with mental retardation is helpful to promote the development of special education. In order to meet the needs of these children, it is necessary to constantly study and improve educational methods and strategies. This research and improvement will promote the development of special education, so that more mentally retarded children can get better education and support.

To sum up, preschool education for mentally retarded children plays an extremely important role in improving children's basic quality, promoting social integration, reducing family pressure and promoting the development of special education. We should attach importance to and actively promote the development of this kind of education, and provide better education and support for children with mental retardation.