Soil loosener for planting Chinese yam

The soil loosener for planting Chinese yam includes a frame, tracks, a gear box, an elevator. The gear box has a power input unit and a power output unit, and the power output unit is two vertical parallel power output shafts located below the gear box and has two vertical spiral milling cutters in opposite rotation directions installed in the output ends of the output shafts. The soil loosener with two vertical spiral milling cutters can meet the requirement of soil loosening depth in planting Chinese yam and has high soil loosening efficiency, and the opposite rotation direction of the milling cutters can counteract partial reacting forces to reduce vibration and prolong service life. The present invention is suitable for planting Chinese yam and other plant with long root, such as burdock.