Barley pest breeding method and special device

The invention relates to a barley pest breeding method and a special device. The breeding device is formed by a pupa nest and a breeding barrel. The pupa nest is obtained from that after a package of a fruiting fresh bacteria stick is taken out, the cylindrical bacteria stick is cut into round cakes 2-6cm in height by a cutter. The breeding barrel is made of stainless steel, or hard plastic, or wood or paper and comprises an outer sleeve, a sleeve bottom, grids and a pupa nest frame, the outer sleeve is a hollow cylindrical paper board sleeve with a rough inner wall, the diameter of the sleeve bottom is larger than that of the outer sleeve, the pupa nest frame is a cylindrical support arranged in the breeding barrel, the grids in multiple layers are arranged on the support at intervals of 3-10cm, protruding structures used for holding the grids are arranged on the support at intervals of 3-10cm, the grids are cylindrical and smaller than the outer sleeve in diameter, and transverse and upright crossed grid bars and grid holes formed by the grid bars are arranged on the grids. The barley pest breeding method and the special device have the advantages that breeding efficiency and quality can be improved, and breeding cost can be reduced.