Community gardens, as a vital component of urban green spaces, are increasingly becoming a key avenue for reconnecting people with nature. As the phenomenon of nature deficit disorder intensifies, community gardens are seen as ideal venues for conducting nature education, which not only enhances residents' physical and mental well-being but also promotes urban sustainability. This study reviews both domestic and international research on community gardens and nature education, using six typical cases for comparative analysis to reveal the unique characteristics of nature education development in different countries. The research finds that domestic community gardens often focus on nature education for youth and have rapidly developed under government policies and local enterprise support, with Shanghai leading in both quantity and quality of nature education in community gardens nationwide. In contrast, nature education activities in foreign community gardens tend to be more self-sufficient and cover a broader age range, but with relatively limited government and corporate support. This study summarizes the different development models and challenges faced by nature education in community gardens, aiming to provide valuable references for the construction of community gardens and the implementation of nature education.