Abstract:Family based parent-child tourism is a main form of children's recreation in urban parks. To build a children's friendly city and transform old park into children's park, we should not only consider children's own behavior characteristics and activity requirements, but also consider the recreational needs of children's family groups. Foshan Park is one of the old parks on the central development axis of Foshan New Town, mainly with greening and single service function.In 2020, the government proposed to transform it into Chancheng children's park.Based on the design practice of transform,this paper explores how to take children's families as main service body, break through traditional parallel functional zoning layout, explore the idea of building a compound space system of mixed use of functions, and create an open shared space friendly to all age groups of children's families.