The invention provides a multifunctional lock device. The multifunctional lock device comprises a lock body as well as a lock cylinder, a lock cylinder spring, a driving part, a locking component anda lock tongue spring which are arranged in the lock body in sequence, wherein a groove is formed in the lock body and comprises a lock cylinder assembly area, a lock cylinder spring assembly area, a driving assembly area and a lock tongue assembly area which are arranged on one straight line in sequence; the lock cylinder is arranged in the lock cylinder assembly area, the lock cylinder spring isarranged on a connecting bar of the lock cylinder in a sleeving manner, the spring is arranged in the lock cylinder spring assembly area, the driving part is arranged in the driving assembly area, andthe locking component is arranged in the lock tongue assembly area and is in nested joint with a boss at one end of the driving part; a lock cylinder limit boss is arranged on the lock cylinder and matched with the groove corresponding to the locking mode set on the lock body, when the lock cylinder rotates, the boss at one end of the connecting bar of the lock cylinder drives the driving part, the driving part rotates to drive the locking component, so that control of the lock cylinder for the lock tongue is realized, and the problems of single function and complicated structure in the priorart are solved.