1. First of all, fairness and universality are low: in some countries, especially developing China countries, some children still have not received basic preschool education. At the same time, there is a clear gap between some cities and rural areas.

2. Secondly, the influence of family background: Many times, children's early education is closely related to the family environment. This has led to the solidification of social strata and unfair opportunities.

3. Finally, paying too much attention to exams: In some countries or regions, paying too much attention to exam results and enrollment rate has become a common phenomenon, which has a negative impact on early childhood education.