The invention relates to an anchoring material and pouring anchoring method for an ultra-high strength large-diameter steel wire main cable strand. The pouring anchoring compactness reaches 95% or above and is increased by 3% compared with the compactness of traditional hot cast anchors. After pressing with an anchor, the retracting value of an alloy casting is not larger than 5 mm, the depth of alloy poured into a steel wire bundle can reach third fourths of a conic section of the anchor after the casting is dissected, and no shrinkage cavity is formed in the casting. According to chemical components of the anchoring material, aluminum, zinc and copper are used as an alloy base, and Mg and rare earth elements are further added, so that the anchoring material has good fluidity, pouring anchoring efficiency reaches 100%, the bonding length of steel wires is improved, and favorable conditions are provided for reducing the anchoring length of the high strength large-diameter steel wire cable strand and reducing the size of the anchor.