目的 基于一物多用的设计思想，发现扩大儿童推车使用功能的设计方法，以延长其生命周期和使用范围。方法 通过时间和空间两个设计方向，进行设计方法总结和实践探讨。将儿童推车和儿童三轮车进行设计整合，以延长其使用时间；将儿童推车、婴儿床以及婴儿摇篮三者有机结合，以延长其使用范围。结论 一物多用的设计思想能够有效延长产品的生命周期和使用范围，通过对时间和空间两个维度的设计方法进行探索，不仅为儿童推车的绿色设计提供了理论和实践支撑，而且还为其他产品的通用性设计提供了借鉴案例。

Based on the multi-purpose design idea, it found the design method to extend the function of child carts, to extend their life cycle and use range. Through time and space design direction to carry on the design method and practice. Combined the children's trolleys and children's tricycle to extend its use of time. Combined the children's trolleys with baby cot and baby cradle to extend the use range. The multi-purpose design ideas can effectively extend the product's life cycle and use range. Through the exploration of the design method of two dimensions. It not only provides theoretical and practical support for the green design of child carts, but also provides a reference case for the common design of other products.