First of all, what new ideas have been introduced into the "learning by doing" project? "Learning by doing", as an inquiry-based science education, emphasizes that children should go through the process of exploring natural mysteries like scientists doing scientific research. Attach importance to the cultivation of scientific attitude and scientific thinking method in educational objectives; In terms of teaching methods, it emphasizes that children should explore independently under the guidance of teachers; In the teaching content, it is pointed out that teachers should carry out teaching around the core scientific concepts. Second, how is the "learning by doing" project implemented in China? After the "learning by doing" project was introduced into China, it was first piloted in four cities, and then extended to more areas. The project team introduced foreign related research results through translation, set up its own research center, and conducted in-depth research on related theories. Under the guidance of relevant theories and with the assistance of government departments and foundations, the "learning by doing" project has gradually established its own teacher training system, and formulated the content standards of science education according to the educational reality in China and the development characteristics of children, and developed a series of teaching resources accordingly. Thirdly, what impact has the "learning by doing" project had on preschool science education in contemporary China? First of all, the practice of "learning by doing" project in China has changed the concept of pre-school science education from three aspects: educational objectives, teaching methods and teaching contents. Secondly, the teachers participating in the "learning by doing" project have changed their thinking mode and teaching concept, and their thinking is more rigorous and scientific, so they can consider their children's long-term development in teaching. Thirdly, after participating in "learning by doing", children's learning attitude and learning ability have changed obviously. Finally, the influence on classroom teaching practice. The teaching content closely revolves around the core scientific concepts. Teachers try to practice the essence of inquiry science education in the teaching process and become the supporters and guides of children's scientific inquiry. Fourth, what difficulties did "learning by doing" encounter in practice? The "learning by doing" project has a positive impact on children's science education, but it also inevitably encounters many obstacles. First of all, the lack of qualified teachers and continuous teacher training have restricted the long-term and effective development of the "learning by doing" project. Secondly, "learning by doing" requires teachers to develop teaching materials and make teaching AIDS, which increases the burden on teachers to prepare lessons and attend classes. Thirdly, as an important feature of the "learning by doing" project, the participation of scientists and authors in preschool science education has encountered great obstacles in China. Without institutionalized cooperation and smooth communication channels as a guarantee, many cooperation projects will eventually become a mere formality or even be cancelled. Finally, based on the experience and lessons of the "learning by doing" project, the article puts forward its enlightenment to the localization of international educational cooperation projects. First of all, under the background of political and economic globalization, education should face the world, actively understand the international trend in the field of education, and respond to the trend of internationalization of education. Secondly, we should rationally understand China's educational and cultural traditions and not blindly praise or criticize them. Third, facing the international education culture and local culture.