The invention relates to a tooth aligning mechanism of a double-sided chamfering continuous machining system for gear sleeves of automobile synchronization regulators. The machining system is composed of two identical double-blade machining chamfering machines and a linear feeding mechanism transversely penetrating machining stations of the two chamfering machines. The tooth aligning mechanism is arranged on a front procedure portion of a workpiece driving machine head. The tooth aligning mechanism is composed of a translation air cylinder, a horizontal movement table base, a lifting air cylinder, a lifting table base, a pair of tongs and a wriggling tooth aligning base. The tooth aligning mechanism of the machining system completes the process through three steps of grabbing, lifting and horizontal movement, and a swing cylinder is used for wriggling tooth alignment; in this way, automatic tooth alignment and deviation correction of a gear sleeve workpiece are achieved, and the gear sleeves can be easily and smoothly installed on a locating clamp on the machine head; and by means of the tooth aligning manner, advanced preparation for locating is achieved, and therefore time is saved; and in this way, the machining efficiency of the gear sleeve workpiece is effectively improved.