The utility model relates to an emergency treatment device for series hybrid electric vehicles, in particular to an emergency auxiliary drive which can directly transfer the torque from the engine to the driving wheel in the state of failure, for example, the electric generator or the motor is damaged, thus achieving the aim of recovering each function of the automobile from the emergency. The device comprises a slide rod, a slide rod connector, a one-way clutch and a universal joint, and is characterized in that the slide rod I (2) and the slide rod II (3) are connected by the slide rod connector (5), and the other end of the slide rod I (2) is connected with the generating units of the series hybrid electric vehicle through the universal joint I (1); on the other end of the slide rod II (3), the one-way clutch (6) which unidirectional transfers torque from the generating units to the driving wheel is arranged, the one-way clutch (6) is connected with the motor through a universal joint II (4), and the slide rod connector (5) and the one-way clutch (6) are both provided with axial positioning.