Synchronous sliding rail mechanism and drawer

The utility model discloses a synchronous slide rail mechanism and a drawer, and the synchronous slide rail mechanism comprises a fixed rail which is provided with a fixed part, and the fixed rail is installed on an installation plane through the fixed part; the middle rail is in sliding connection with the fixed rail, and a short rack is arranged at the bottom of the middle rail; the movable rail is connected to the upper portion of the middle rail in a sliding mode, and a long rack is arranged below the movable rail; the supporting seat is arranged on the fixed rail, a duplicate gear is installed on the supporting seat, the duplicate gear is provided with a first gear and a second gear, the first gear is meshed with the long rack, and the second gear is meshed with the short rack. The movable rail drives the middle rail to run in the same direction through a simple mechanism, noise can be reduced, cost is reduced, slipping is reduced, and the stability of the sliding rail mechanism is improved. 本实用新型公开了一种同步