Locking mechanism with limiting stopper

The invention provides a locking mechanism with a limiter. The locking mechanism comprises an outer handle assembly, an inner handle assembly, a lock pin assembly, a lock seat assembly and a cabin door limiting assembly. The outer handle assembly comprises an outer lock disc, an outer handle and a swing arm connecting rod mechanism driven by the outer handle, the swing arm connecting rod mechanism is in linkage with the inner handle assembly and the lock pin assemblies, the number of the lock pin assemblies and the number of the lock seat assemblies are multiple, lock pins of the multiple lock pin assemblies are driven by the swing arm connecting rod mechanism to synchronously act, and at least one lock pin assembly further comprises a limiting mechanism. The limiting mechanism can limit the lock pin when the lock pin retracts and relieve limiting of the lock pin when the lock pin is collided by the corresponding lock seat and overcomes limiting resistance, and the cabin door limiting assembly can keep the ca