The disclosed is a breeding box, characterized in that the breeding box comprises a close over (1), a composite bed (2) and seeds (3). A breeding bed (4) is arranged on the composite bed (2), with the seeds (3) arranged on the breeding bed (4). The top of the breeding bed (4) is provided with a rim (5), with the close over (1) adhered on the rim (5) with adhesive for packing the seeds (3) in the breeding bed (4). The composite bed (2) is composed of a straw fibrous layer (21) and a paper pulp layer (22) on the straw fibrous layer (21), and the close over (1) is produced by straw fiber sheet. Utilizing the breeding box of the utility model to breed and cultivate seeding has the advantages of saving human energy, saving seeds, saving land and high manufacturing efficiency. The breeding box of the utility model not only can be utilized for breeding seeds, but also can be utilized for breeding seeds of other farm crop, and further can be utilized for factory produced seeds breeding and mechanized seeding.