Steel-concrete composite structure is one of the main structures in the field of civil engineering construction,which can give full play to the properties of concrete and steel, thus leading to a sustainable development direction of the bridge structure.In recent years, with the popularization of the concept of green construction and sustainable construction, the proportion of steel-concrete composite bridges in highway and railway bridges has gradually increased. Consequently, many scholars have carried out scientific research and engineering applications on various aspects of steel-concrete composite structural bridges. In order to promote comprehensive and further basic research on this structure, and to guide the practical application in bridge construction, the latest domestic and foreign researches in 2019 were reviewed and summarized. The researches include the overall mechanical behavior of steel-concrete composite structures, shear connectors of steel-concrete composite structures, steel-UHPC composite structures, concrete-filled steel tube structures and steel-concrete composite structures with corrugated steel webs.Based on the latest research progress above, the future research focuses and directions of steel-concrete composite structure are prospected.