Wheat field soil hardening breaking machine

The utility model discloses a wheat field soil hardening breaking machine which comprises a U-shaped machine frame, pull rings are arranged at the two ends of one side of the U-shaped machine frame, a fixing rod is welded between the ends of two side plates of the U-shaped machine frame, a plurality of V-shaped breaking pieces are welded to the fixing rod, a plurality of reinforcing ribs are further welded between the fixing rod and the U-shaped machine frame, and the V-shaped breaking pieces are welded to the reinforcing ribs. A plurality of crushing nails are welded at the lower end of a plate, parallel to the fixed rod, of the U-shaped rack; the harrowing and subsoiling machine has the functions of harrowing, leveling and subsoiling, is suitable for working before and after wheat and rice sowing, namely harrowing, leveling and soil preparation before sowing and harrowing seeds and breaking hardened soil after sowing, and particularly can be used for breaking hardened soil of wheat, corn and other crops cau