The invention is appliance to the field of the intelligent control and provides a multi-functional controller and a system; wherein, the multi-functional controller also comprises a patrol control unit, a floor control unit, and an anti-thief alarming control unit. The patrol control unit can be used for receiving, analyzing and identifying on-off signals inputted by users and outputting relative information. The floor control unit can be used for receiving and indentifying card reading information inputted by users, giving corresponding information tips and outputting floor control signals. When an arming control point is arranged, the anti-thief alarming control unit can be used for receiving inputted external sensing signals, converting the sensing signals into alarming signals, then giving alarming tips and outputting alarming signals; when a disarming control point is arranged, the input signals are shielded. The patrol control unit, the floor control unit, and the anti-thief alarming control unit share a central processor. The multi-functional controller in the embodiment of the invention adopts a card reader to perform the arming setting, realizes the disarming, thief preventing and alarming functions through a plurality of ways, reduces the alarming costs of users, safeguards the system equipment, and prolongs the service life.