The invention discloses a suitcase and bag drag link with a robbery and theft proof device, which comprises a drag link seat, a dial-up switch, a circuit board, a lock, a lock coil, a locking mechanism, an unlocking mechanism, an unlocking keyboard and a power supply that are arranged on the drag link seat, wherein, the circuit board is electrically connected with the dial-up switch, the unlocking keyboard, the locking mechanism and the power supply respectively, the unlocking mechanism comprises a driving slide block, an electromagnet, and a unlocking button and a guide pole which are respectively arranged at the two ends of the driving slide block, the locking mechanism comprises a driven slide block, a locking hole is arranged on the driven slide block and the arrangement between the driving slide block and the driven slide block presents a wedge shape. The suitcase and bag drag link has the advantages that the structure is simple and an alarm can give warning to the host after the power supply is powered on whatever a plug is drawn out or the lock coil is snipped when the suitcase and bag is robbed, thereby improving the security of the suitcase and bag largely.