The anchorage fastening system is a lifeline engineering to a suspension bridge,for its design and construction quality may decide the safety and durability of the bridge to a great extent.In order to improve the structure’s reliability and durability,the tunnel anchorage fastening system of Guanshan bridge is designed as an innovative formed steel fastening system,which requires a high accuracy in location.This paper describes the key technology of the anchor beam and anchor rod installed and constructed in the cramped and tilted tunnel anchorage cave.