Birth population in recent years has become a hot topic of interest in society and academia， including related maternal and child issues such as birth population，population structure，maternal and child care. Based on policy tools and policy - related two - dimensional framework perspective of maternal and child policy text analysis and research，this article conducted an in-depth analysis of the text of maternal and child policy since the implementation of the multi-child policy and summarized the development patterns of maternal and child policies. The results indicated some problems in the field of maternal and child policy field，such as an imbalance in the use of policy tools，a need to optimize the structure of sub-tools，and the strength of policy stakeholders that have yet to be explored. Therefore，in the process of formulating maternal and child health policies，we should pay attention to the external characteristics of the policies，optimize the use structure of policy tools，and give full play to the synergistic role of policy stakeholders，therefore ultimately serving the establishment and improvement of the birth support system and the smooth implementation of the multi-child policy.