The invention discloses a remote control key anti-theft lock cylinder which comprises mechanical devices of a lock cylinder body, a lock liner, an anti-drill steel bar, a marble bead, a spring, a clamping bead, a key and a magnetic attraction column. The remote control key anti-theft lock cylinder is reasonable in structure, convenient, practical, good in anti-theft performance, durable, safe, reliable, easy to mount, low in cost, and wide in using range, a plurality of closed parts are added in the lock cylinder, accordingly the difficulty of opening the lock cylinder is enhanced, property loss is effectively avoided, and the lock cylinder is suitable for building houses and villa houses.