Automobile and sliding rail mechanism of automobile seat

The invention discloses an automobile and a sliding rail mechanism of an automobile seat. The sliding rail mechanism comprises a fixed sliding rail, a movable sliding rail, a control rod, a fixed plate, a reversing plate and a locking part. The hinge point of the reversing plate and the fixed plate is higher than the upper surface of the movable sliding rail. As the locking position of the lockingpart is fixed, the locking part is in the locking position by inclining the front end of the reversing plate at a relatively large angle, that is, the back end of the reversing plate rotates upward correspondingly to a relatively high position and is far away from an automobile floor; moreover, as long as the length of the reversing plate in a back panel section of the hinge point is arranged reasonably, the back end of the reversing plate can be located in a relatively high position, so that the locking part at the front end is in an unlocked state, the contact friction problem between the reversing plate and the fl