Abstract: Green Scouts, as a children's organization under the leadership of the National Land Afforestation Promotion Organization of public welfare organizations in Japan, is established in schools or regions to publicize and practice the green action and cultivate children's social responsibility through forest learning and volunteer services. From the perspective of organizational education, the organizational goal is the organic unity of children's future responsibility and current quality cultivation.The contents of practical activities focus on the combination of personal growth and social services under the main line of “green”. The social practice activities by Green Scouts in Japan promote the socialization of children in a multidimensional way, including promoting children's role socialization with a realworld experience, promoting the moral socialization of children through community environmental protection, enhancing children's cognitive socialization through social service activities, and training children's communication socialization through mutual assistance and cooperation. The main paths to carry out social practice activities include adult demonstration and practical guidance, joint education of schools and communities, and online display and publicity. The implications for China are that, when promoting social practice activities of children's organization in China, it is necessary to pay attention to maintaining the openness of social practice activities, designing regional social practice activities, training problemsolving abilities, and promoting the sustainability of social practice activities.

Key words: children's socialization, Green Scouts in Japan, social practice activities, children's organization