A singly-sealed and integrally-poured inhaul cable anchoring device comprises a protective cover, a clamping sheet, an anchoring plate, a sealing device I or sealing devices I and II and m unbonded steel strands with isolation tubes; the sealing device I comprises a sealing plate and isolation tubes; the sealing plate is positioned on the end surface of a small end groove of a conical hole of theanchoring plate; the isolation tubes singly and independently seal each penetrated unbonded steel strand to form m sealing units; in each sealing unit, the isolation tube and the anchoring plate and the isolation tube and the sealing plate are both sealed through interference fit between a plastic tube and a steel member; a communication hole is formed in a position, positioned in a groove with astep in the anchoring plate, of each isolation tube; a non-hardening elastic anticorrosive material is poured in each sealing unit; anti-corrosive grease is poured or coated to one part, exposed out of the anchoring plate, of each unbonded steel strand in the protective cover; and m is an integer which is larger than or equal to 2. According to the singly-sealed and integrally-poured inhaul cableanchoring device, through adoption of independent sealing, the sealing is reliable, the structure is simple, the pouring amount of the anticorrosive material is small, the pouring construction is convenient, and the cost performance is high.