本文基于全国6个省(市)3078个农民工的调查数据,采用Tobit回归模型,实证分析了农民工医疗支出的影响因素。研究结果表明,女性、年龄越大、已婚、受教育程度越高的农民工,其医疗支出水平更高;生病风险、自评健康状况及长期疾病等健康因素对农民工医疗支出有显著的正向影响;在经济因素方面,家庭土地规模对农民工医疗支出有显著的负向影响,而工资收入和城市住房对农民工医疗支出的影响不显著;从医疗保险因素来看,城镇医疗保险对农民工医疗支出有显著的正向影响,并且对于患有长期疾病的农民工来说,他们的医疗支出要明显低于未参加城镇医疗保险的群体,城镇医疗保险有助于缓解农民工在疾病冲击下的医疗负担,但新型农村合作医疗保险的影响作用不显著。 Based on the survey data of 3 078 migrant workers from 6 provinces (cities) in China, Tobit regression model was used to empirically analyze the influencing factors of migrant workers’ medical expenditure. The results showed that migrant workers who were female, older, married and more educated had higher medical expenditure; health risk such as illness risk, self-rated health condition and long-term disease were significant In terms of economic factors, the scale of family land has a significant negative impact on migrant workers ’medical expenditures, while wage income and urban housing have no significant effect on migrant workers’ medical expenditures. From the point of medical insurance, urban medical insurance Have a significant positive impact on migrant workers’ medical expenditures, and for migrant workers with chronic diseases, their medical expenses are significantly lower than those who did not participate in urban medical insurance. Urban medical insurance can help alleviate the problem of migrant workers in Disease burden on the medical burden, but the impact of new rural cooperative medical insurance effect is not significant.