The invention provides a lock core of an axially-offset magnetic control steel column, comprising a core sleeve, a core axle, a front end cover and a rear end cover which are arranged on both sides of the core axle, a steel column marble for locking and positioning, and a marble spring, wherein the core axle and the rear end cover are respectively provided with at least one corresponding marble hole, the axis of lead marble hole is parallel to the axis of the core axle; the steel column marble and the marble spring are arranged in the marble hole; one end of the core sleeve where the front end cover is arranged is provided with an unlocking stem bin for holding an unlocking stem. The lock core disclosed in the invention has the advantages of simple structure, small total size, easy production and installation, reliable digital management, moreover, the shell of the lock core is a plastic shell, thus the lock core has low application cost and anti-theft function.