Gear shifting mechanism and transmission

The utility model relates to the technical field of transmissions, and discloses a gearshift mechanism and a transmission.The gearshift mechanism comprises a gearshift shaft assembly movably arranged in a shell, and the gearshift shaft assembly comprises a first gearshift shaft and a second gearshift shaft; the interlocking assembly is arranged at one end of the gear shifting shaft assembly and matched with the first gear shifting shaft and the second gear shifting shaft. The interlocking assembly and the self-locking assembly are arranged on the same side of the gear shifting shaft assembly, the self-locking and interlocking functions are achieved, meanwhile, the gear shifting shaft can be set to be shorter, the gear shifting shaft can be set to be shorter, and the gear shifting shaft can be set to be shorter. When the interlocking assembly and the self-locking assembly are arranged on the axial side, away from the shell, of the gear shifting shaft assembly, the interlocking assembly and the self-locking ass