The invention relates to a planter, in particular to a garlic planter which can realize automatic operation. The garlic planter comprises a machine frame, a seed discharging device, a seed guiding device, a planting device, a walking device and a speed change device, wherein the seed discharging device, the seed guiding device, the planting device, the walking device and the speed change device are arranged on the machine frame; the machine frame consists of a side plate I, a side plate II, a bottom plate and a seed sieving plate supporting frame, the side plate I and the side plate II are arranged in parallel, the seed sieving plate supporting frame and a bottom plate fixing frame are arranged between the side plate I and the side plate II, the seed sieving plate supporting frame and the bottom plate are arranged in parallel, and the machine frame is connected with a tractor through a connecting rod; the seed discharging device is erected at an upper position between the side plate I and the side plate II; the seed guiding device is erected under the seed discharging device; the planting device is arranged at the lower end of the seed guiding device; the walking device is arranged at an inclined rear position of the bottom plate; the speed change device is fixedly arranged at the front part of the bottom plate, and is connected with a motor of the tractor. Spiral seed guiding pipes have a good automatic orientation function, so that the rate that scaly buds face upwards can be ensured to be 96%, mechanized sowing can be realized, the production efficiency is high, and the garlic sprouting rate is high.