In order to promote the development of steel bridge technology, research hot issues and frontiers in recent years in the field of steel bridges at home and abroad were systematically sorted out. Firstly, it reviews the recent construction achievements and technological progress of large-scale steel bridges in China in 2020. Then the latest progress made in the main research directions in the field of steel bridges are systematically summarized. At the same time, many pioneering work done in various aspects of the steel bridge are introduced in detail. It is expected to provide basic information and reference for engineering applications and academic research in the field of steel bridges.