With the rapid development of high-speed railway, the structure of railway bridge is diversified, and ultra-large road degree and ultra-large weight have become the main characteristics of high-speed railway bridge across the river. Among them, steel frame beams with large span and large tonnage have become the main structural system of railway across the river due to their excellent characteristics. The innovation of construction method and technology for erection of large-span and large-tonnage steel beams in rivers and valleys has become the key to the successful installation of large-span and large-tonnage steel beams. The technology based on multi-point synchronous hydraulic control, flexible traction and steel joint sliding boots is the key innovation technology to realize the erection and installation of large-span and large-tonnage steel beams. The successful application of this technology provides reference and experience for the construction of similar large-span and large-tonnage steel Bridges across rivers and valleys.