Pit digging device for agricultural planting

The utility model discloses a pit digging device for agricultural planting, which comprises a rack, a pit digging assembly and a lifting assembly, a moving assembly is arranged below the rack and drives the rack to move, a digging hole is formed in the bottom surface of the rack, the pit digging assembly is correspondingly arranged above the digging hole, and the lifting assembly comprises a rotating rod and a lifting plate. One end of the rotating rod is rotationally connected with the bottom face of the rack, the other end of the rotating rod sequentially penetrates through the lifting plate and the top face of the rack, a rotating handle is arranged at the end, located on the top face of the rack, of the rotating rod, the rotating rod is rotationally connected with the top face of the rack, external threads are arranged on the surface of the middle of the rotating rod, and a bearing is arranged between the rotating rod and the lifting plate. The bearing inner wall is in threaded connection with the rotatin