Child-friendly City is quite a new planning concept in China that did not really arise until the 2010s. In recent years, many Chinese cities released their Child-friendly City Strategic Planning which highlighted the children’s right, growth, and opportunities and started to apply the concept into practice in planning projects. This study illustrates knowledge of child-friendly city planning by discussing the current child-friendly planning policies in Beijing and using Shuangjing Community as a case study to analyze children’s participation in the planning process. Interviews are made with different stakeholders, which help identify the community engagement plan involved, examine children’s roles and positions, and investigate their interactions. Finally, a couple of recommendations are proposed for a better child-friendly Beijing.