Abstract： Objective To analyze the research status,hotspots and frontiers of small for gestational age infant (SGA) worldwide in recent years,summarize the development context of this field and predict the future development trend,so as to provide reference for SGA research and clinical guidance.Method Based on the Web of Science (WOS) core collection database,Science Citation Index Expanded (SCI-EXPANDED) and Social Sciences Citation Index (SSCI) were selected.The retrieval form was:(TS=("small for gestational age children" or "small for gestational age infant" or "small for gestational age") AND LA=(English) AND DT=(Article OR Review Article)),it covered the period from January 1,2012 to August 16,2022.CiteSpace,v.6.1.R3.64-bit was used to draw the co-occurrence map of countries,institutions,authors and keywords,keyword clustering map and emergence word map,to explore the topic evolution and hotspots in the field of global SGA research field.Result A total of 6524 literatures were included.In recent years,the annual number of global SGA research papers showed a rising trend in volatility.Based on the analysis of betweenness centrality (0.15) and number of publications (1859 literatures),the United States has the leading advantage in this research field.The most prolific institution was Karolinska Institute (Sweden) with 226 literatures.The main research direction of the highly productive author was NICOLAIDES K team.The main research direction was to explore the risk factors of SGA,early and effective screening methods for SGA and how to reduce the prevalence of SGA.Keywords emergence word map showed that,in the past three years,the research hotspots had been focus on epidemiological studies and the effects of gene expression on pregnancy outcomes.Conclusion To further develop the clinical multi-center SGA molecular epidemiology and basic research,reveal the risk factors of SGA to improve the three-level prevention and treatment of SGA is still the research direction of obstetric and pediatric medical staff.