The utility model discloses a ridge furrow irrigation separated layer fertilization wheat sowing machine. In the sowing machine, a plough and a sowing port of a concave head are downwardly fixed on three front beams; three ridge ploughs are fixed on a rear beam; seeds are also spread behind the ridge ploughs; three supporting rods are extended backwards on the rear beams of two ridge ploughs; the heads of the supporting rods are downwardly connected with a ridge pressing cover; sowing and fertilizing are simultaneously performed during sowing of the sowing machine; and thus, the sowing machine can perform separated layer fertilization and deep fertilization and is easy to manufacture and convenient to operate.