Prefabricated bridges have become an important development direction of bridge construction due to the advantages of good construction quality, low impact on the environment, short on-site operation time, and high level of construction safety. Prefabricated concrete bridges are not only suitable for urban road bridges with complex traffic, but also for railway bridges in difficult construction environments. This paper sorts out the research progress of prefabricated concrete bridges at home and abroad in 2020 through the method of literature research. According to the type of bridge structure, new technologies, new structures and typical engineering applications in this field are discussed from two aspects: the upper structure and the lower structure. After a rough summary in this article, in the superstructure, the connection structure, crack resistance and durability of the nodes have received extensive attention from scholars; in the substructure, as the prefabricated system is applied to the bridge in the high-intensity earthquake area, The structure and seismic performance of prefabricated bridge piers are currently a hot research topic. The durability and crack resistance of the substructure still needs to be improved.