【Objective】 To analyze the effect of maternal and child health care(MCH) program for urban migrant population on the state of health care service of migrant children in Beijing. 【Methods】 Eleven communities were chosen in Chaoyang and Daxing district by stratified cluster sampling to implement a five-year MCH program for urban migrant population. At the end of the program, caretakers of migrant children were randomly chosen in the communities to answer a questionnaire. Data were compared with the baseline. 【Results】 There were 1 005 migrant children involved in the terminal survey. The results showed that: 1)The awareness rate of child health service and knowledge of child health increased significantly among the caretakers of migrant children. 2)The utilization of health care service for migrant children improved significantly. The rates of having child health care record, health care coverage and system management significantly improved than the baseline. The increased rate was 71.7%, 76.2% and 87.5% respectively. 3)The health states of migrant children were significantly improved than the baseline. The prevalence of diarrhea within 2 weeks of migrant children was lower than the baseline, and so was the prevalence of cough within 2 weeks. 【Conclusion】 The implement of the MCH program for migrant population have significant roles in improving the health knowledge of the caregivers, and in improving the health services and health state of migrant children.