Small hole digger for catalpa bungei planting

The utility model relates to the technical field of hole digging machines, and discloses a small hole digging machine for catalpa bungei planting, which comprises a cart, a conveying groove arranged at the top of the cart, a threaded drill rod arranged in the conveying groove and used for digging mines, and a motor arranged in the conveying groove and used for driving the threaded drill rod to rotate. A cart, a clamping plate and an adjusting device are pushed, a planter can insert multiple groups of catalpa bungei seedlings into a conveying groove and sequentially clamp the seedlings on the clamping plate in a row, and when the seedlings are fixed on the inserting clamping plate, the roots of the seedlings are moved to the lower part of the clamping plate, so that the roots of the seedlings are protected; after the supporting device, the motor and the threaded drill rod punch the planting hole, the push rod is directly pushed forwards, the push plate pushes a sapling in the clamping plate forwards, one sapli