润色下面的一段话：既往研究对于家庭消费结构的定义多停留在消费类别与比例方面本文将家庭行为、理念和心理等变迁纳入研究有效拓展了家庭消费结构的概念。受我国生育政策影响既往研究较少以多孩家庭为主体展开且多以量化方法进行研究本研究采取质性研究的方式一定程度上补充了学界现有的生育行为与家庭消费结构研究的空白。此外本文与当前中国的社会热点与人口政策相贴合具有较强的现实意义与政策参考意义。本研究从多孩家庭入手挖

While previous research on household consumption structure has focused on consumption categories and proportions, this study expands the concept to include changes in family behavior, beliefs, and psychology. Given the impact of China's birth policy, previous research has rarely focused on multi-child families, and studies have mostly used quantitative methods. This study adopts a qualitative approach, filling the gap in the literature on fertility behavior and household consumption structure. Moreover, this study is highly relevant to current social issues and population policies in China. By exploring the changes in family structure that result from having multiple children, this study sheds light on the problems and challenges that families face after having multiple children, providing insights for addressing the issue of declining birth rates and offering policy recommendations for supporting families. Establishing a sound system of policies to support childbearing and child-rearing requires not only subsidies and tax incentives but also the joint responsibility of the state and society as co-reproducers. This will help reduce the cost of childbearing, child-rearing, and education and address key issues such as housing, childcare, and education. By promoting gender equality, protecting workers' rights, and reducing the burden of child-rearing on families, we can construct a new pattern of child-rearing that aligns with the needs of both the family and the country. However, this study has limitations due to data constraints. For example, it cannot answer the question of whether gender plays a mediating role between fertility behavior and individual consumption. Future research is needed to address this issue. Additionally, because this qualitative study focused on multi-child families, it would be beneficial to interview couples in single-child families for comparison. Finally, the conclusions drawn from the interviewees' experiences in urban areas may not apply to multi-child families in other regions, requiring further empirical research to test the generalizability of the findings