[目的]建立门诊医疗服务利用两步实证模型,分析农民工这一特殊群体门诊医疗服务利用的影响因素。[方法]采用门诊两步模型对唐山市1050名农民工两周患病门诊医疗服务利用情况进行分析。[结果]农民工门诊利用受医疗保障状况、文化程度、年龄、病情等多种因素影响。[结论]要完善农民工医疗保障制度,提高医疗服务利用的公平性。 [Objective] To establish outpatient medical service and make use of the two-step empirical model to analyze the influencing factors of outpatient medical service utilization in this particular group of migrant workers. [Methods] The outpatient clinic two-step model was used to analyze the utilization of medical services in 1050 migrant workers in two weeks in Tangshan city. [Result] The outpatient clinic utilization of peasant workers was affected by many factors such as the status of medical insurance, educational level, age, condition and so on. [Conclusion] It is necessary to improve the medical security system for migrant workers and improve the fairness of medical service utilization.