The invention discloses a device applied to quenching induction equipment and used for preventing the surface of a hoisting chain from being oxidized and belongs to the technical field of quenching induction equipment accessories. The device comprises a pressure sprayer and a mist absorbing cover body provided with a central through hole. A quenching induction coil is axially arranged in a heat-preservation vertical pipe, and a nitrogen distributor provided with a central hole is arranged at the bottom of the heat-preservation vertical pipe. A nitrogen cavity of the nitrogen distributor is filled with nitrogen, and the top wall of the nitrogen distributor corresponds to an outlet of the quenching induction coil. Nitrogen outlets which are circumferentially formed in the top wall at intervals communicate with the outlet of the quenching induction coil. The mist absorbing cover body is arranged above the pressure sprayer in a covering manner. Mist absorbing holes are densely formed in the inner side wall of the mist absorbing cover body, and a mist absorbing cavity of the mist absorbing cover body communicates with a mist absorber. By means of the device applied to the quenching induction equipment and used for preventing the surface of the hoisting chain from being oxidized, oxidation of the high-temperature hoisting chain is completely eradicated; the depth obtained after carburizing treatment conducted before is maintained; the diameter and surface roughness of the chain are guaranteed; the requirements for abrasive resistance and tensile strength of the hoisting chain are met; quenching quality is remarkably improved; and the hoisting chain oxide skin polishing procedure is omitted, and polishing cost is saved.