In today’s society, the concept of child-friendliness is highly emphasized, and its influence is gradually spreading from children’s products, education and other fields to urban public space. As an important part of the city, urban parks carry children’s needs for daily leisure and recreation, as well as growth and exploration. However, there is a lack of research on park landscapes that incorporate the concept of interaction from a child-friendly perspective, and children’s needs are often neglected, making it difficult for parks to meet children’s physical and mental development, so it is urgent to incorporate the concepts of child-friendliness and interaction into the design of park landscapes. In this study, field research was used to observe the activity behavior and preference of children of all ages; case studies were used to collect excellent design cases and analyze their design ideas, element use, and interaction methods in order to learn valuable design experience. The analysis concluded that the area elements with diversity and interactivity are more likely to attract children to stay for a long time. In theory, this study provides new perspectives for the integration of urban park landscape design and human-computer interaction concepts under the perspective of child-friendliness, and in practice, it takes Huangcunqiao Park as an example to provide practical design solutions for urban park landscapes.