Abstract: Large-scale migration of rural residents in China has provided cities with abundant human capital，but it has also exacerbated the problem of leftbehind children in the meantime Paying attention to this important problem，we conduct a study exploring the impact of labor marketization reform on the migration decision of children in migrant families from both theoretical and empirical perspectives We firstly build a theoretical framework of labor marketization's impact on the migration decision of children in migrant families，which suggests that the labor marketization reform in cities can enhance the care capacity of migrant families for their children through price and quantity allocation effects，thereby promoting their children's mobility Then we verify the theoretical framework based on China's labor marketization index and micro survey data of the migrant population (CMDS Data)，revealing that labor marketization in cities has a significant influence on the probability of children moving with their families
Then we make further empirical analysis，revealing that the impact mechanism mainly manifests as a quantity allocation effect rather than a price effect These conclusions remain robust after restricting the sample，controlling the difficulty of migrant children's school enrollment and the characteristics of the outflow area，and using instrumental variables to alleviate endogeneity issues Heterogeneity analysis finds that the promotion effect of labor marketization on the mobility of children in migrant families is more significant for families with high parental skill levels，intraprovincial mobility，and those living in cities where laborin tensive industries are dominant
The policy implication of this paper is that the government can alleviate the problem of leftbehind children and intergenerational inequality by improving labor marketization reform to enhance the level of factor allocation，and this effect is currently mainly manifested as a quantity al location effect Based on the analysis of the mechanism of quantity allocation effect and price effect，the government can formulate some reasonable policies，such as encouraging small and micro enterprises to absorb migrant population for employment，relaxing household registration restrictions and lowering the entry threshold of urban labor market，focusing on resolving the obstacles in the process of migrant population entering the labor market，allowing labor production factors to achieve full allocation through market mechanism While deepening labor marketization reform，the policy maker should also consider the heterogeneity of different groups For example，it can carry out labor skill training for migrant population with loweducation level and establish provincial fiscal special transfer payment system for crossprovincial migrant families

Key words: labor marketization reform, immigration, leftbehind children, accompanymigrated children

摘要： 劳动人口大规模流动产生的留守儿童问题一直是备受关注的热点。本文从数量和价格两种配置效应出发，构建了劳动力市场化改革影响流动人口子女随迁决策的理论框架，并基于流动人口微观调查数据实证探究了劳动力市场化程度提升对流动人口子女随迁决策的影响。研究发现：（1）流动人口所在地劳动力市场化程度提升对其子女随迁具有显著正向影响；（2）这种影响主要表现为数量配置效应而非价格效应，即劳动力市场化通过降低就业和落户门槛，改善了流动家庭幼儿抚养比和内部分工，使其更可能做出子女随迁决策，而非通过提高流动人口的工资水平来影响其决策；（3）对于技能水平较高的家庭、在省内流动的家庭和流向劳动密集型产业为主的城市的家庭，劳动力市场化对其子女随迁的促进作用更加明显。本研究有助于认识劳动力市场化改革对解决留守儿童问题的作用及其机制，为深化全国统一大市场建设和新型城镇化提供政策借鉴。

关键词: 劳动力市场化, 人口流动, 留守儿童, 子女随迁