An anti-disengaging mechanism of a cable connector includes a power connector having a jack opening. The power connector also has a metal electrode and a ring buckle located within the jack opening. A plug has a plug pin. When the plug pin is inserted into the jack opening, the ring buckle surrounds the plug pin. A longitudinal sliding pushrod is set in the power connector so that when the longitudinal sliding pushrod is in a first position, the longitudinal sliding pushrod tilts the ring buckle so as to lock the plug pin in the jack opening. When the longitudinal sliding pushrod is in a second position, the ring buckle releases the plug pin.