Gear shift mechanism

The utility model provides a gear shift mechanism, and the mechanism comprises an installation structure; a gear shift lever, wherein one end of the gear shift lever is located in the installation structure and connected with one end of a linkage cable in a pivot manner; the linkage cable, wherein one end of the linkage cable is pivoted to the gear shift lever, the other end of the linkage cable movably passes through a side of the installation structure, and the linkage cable comprises a screw rod with a thread; and an inertia structure which sleeves the screw rod and comprises a fixed part and a rotatable part, wherein the fixed part is used for fixing the inertia structure on the installation structure. When the gear shift lever moves, the gear shift lever drives the linkage cable to move, thereby enabling the rotatable part of the inertia part to rotate through the screw rod. The mechanism reduces the inertia mass, still can obtain a good inertia effect during gear shift, reduces the inertia mass, saves the oil consumption of an automobile, and can achieve the compact packaging design.