The utility model discloses a tobacco straw back chipping plough, it belongs to agricultural machinery. It mainly includes the frame, and frame top front end is equipped with the transmission case, the transmission case passes through driving sprocket to be connected with the gear box, and the gear box is connected with the rotary blade, is equipped with the barb between two blades of rotary blade, and the frame bottom at rotary blade rear is equipped with the back chipping screen cloth, left side, right side and the rear side of back chipping screen cloth is equipped with the reticulate bodyrespectively in the frame, the rotary blade sets up in 13 departments at the frame rear, is length L between transmission case rear and the frame afterbody 1 1.3m. The utility model discloses simplestructure, convenient to use through rotary blade and barb, pulls out the back with the tobacco straw, stack to the back chipping screen cloth on, greatly reduced tobacco grower's intensity of labour.The utility model discloses mainly used tobacco straw back chipping.