The invention discloses a high-magnetic-conductivity blank surface treatment process. The high-magnetic-conductivity blank surface treatment process comprises a feed end, a conveying section and a machining section connected in sequence; the conveying section comprises a horizontal conveying belt, an overturning module and a gathering module; the overturning module comprises at least two thread guide columns for overturning magnetic blanks from a horizontal state to a vertical state; the gathering module comprises multiple chutes communicating with the thread guide columns, and pushing devicesconnected to the end parts of the chutes and used for bonding multiple magnetic blanks; and the end parts of the multiple chutes are gradually closed up. Through the arrangement, the magnetic blanksare molded to directly enter the horizontal conveying belt; under the effect of the overturning module, the angles of the magnetic blanks can be timely adjusted to prepare next polishing of bonded working surfaces; and through adjustment by the gathering module, the multiple magnetic blanks can be closed up to increase the bottom stress area, so that the magnetic blanks are not easy to incline during polishing, the polishing quality is improved, the bonded working surfaces of the magnetic blanks are tighter in bonding, and the working performance stability of the magnetic blanks is improved.