Reverse gear self-locking device of automobile

The utility model provides a reverse gear self-locking device of an automobile and belongs the technical field of automobiles. The reverse gear self-locking device of the automobile solves the problem that a conventional reverse gear self-locking device of an automobile is prone to trip-over stop and however, mechanical performance of a shift gear is affected after modification. The reverse gear self-locking device of the automobile comprises a fixing plate and a reverse gear shifting fork connected on the fixing plate in a rotation mode. A positioning piece is arranged in the fixing plate in a moving mode. At least one groove is arranged in the reverse gear shifting fork. When the reverse gear shifting fork is relatively fixed with the fixing plate, the positioning piece abuts against the groove. Under the condition that original performance of a shifting operational mechanism is ensured, the reverse gear self-locking device of the automobile enables a reverse gear mode to be locked and stably fastened.