Abstract: Sustainable development is a strategic goal and future aspiration for the development of preschool education in China, and it is also a necessary representation, guarantee, and path for the healthy and stable development of preschool education.The sustainable development of preschool education urgently requires the construction of a scientific and comprehensive indicator system to guide it. Based on the theory of sustainable development systems, a sustainable development evaluation index system for preschool education was constructed from three dimensions: height and level, spatial structure, and time process, consisting of "development degree", "coordination degree", and "sustainability degree". The comprehensive level and "three degree" level of sustainable development for preschool education in China were calculated, and it was found that the overall sustainable development of preschool education in China is at a moderate level, There are significant differences among the four major regions of the country, with insufficient balance between development, coordination, and sustainability. There are also significant differences in the internal components of the "three dimensions". The realization of sustainable development of preschool education in our country should focus on funding investment and take multiple measures to improve the development level of preschool education. Guided by fairness and balance, we should promote the balanced development of preschool education between urban and rural areas and between kindergartens, and use internal and external forces to ensure the healthy and sustainable development of preschool education.