Gear shifting structure and mini-tiller

The gear shifting structure comprises a gear shifting shaft and an empty sleeve output shaft, a through hole is formed in the empty sleeve output shaft along the axis, the gear shifting shaft is arranged in the through hole in a penetrating mode and matched with the empty sleeve output shaft in a sliding mode, and a shifting structure is installed on the gear shifting shaft. The shifting structure can be matched with any multi-stage gear shifting driven gear arranged on the empty sleeve output shaft in an empty sleeving mode, and any gear shifting driven gear matched with the shifting structure drives the empty sleeve output shaft to rotate through the shifting structure. The mini-tiller comprises the gear shifting structure. The gear shifting shaft is arranged in the through hole of the empty sleeve output shaft, the gear shifting structure is compact, the space of a reduction gearbox structure is not occupied independently, the space needed by gear shifting is reduced, the overall size of a gearbox is reduc