The Songyuan Tianhe Bridge adopts a new type of large-angle and long adjustable suspension cable anchoring method, which results in the suspension rod tensioning being different from the ordinary beam support tensioning. Ordinary tensioning tools cannot meet the tensioning requirements, therefore, a new tensioning system that can meet the construction requirements needs to be designed based on the characteristics of this project. This tensioning system has been proven to be effective after application in engineering, and can provide relevant experience and reference for the conversion construction of similar bridge systems in the future