The invention relates to an adjustable-pitch regulator special processing technique, which is characterized in that a special tooling is arranged on a machine table, workpieces are positioned and clamped on the tooling, a machine main shaft box and a small upright are adjusted to ensure that the main shaft and the workpiece position hole are on the same shaft; the main shaft, beams and small upright are fixed and successively provided with three adjusted cutters for respectively carrying out semi-finishing and finishing on a large column hole after adjustment; and the space of every two processed large column holes is ensured, concentricity of two corresponding large column holes on the same arm is less than 0.05mm, the surface roughness is smaller than Ra1.6, and the finishing flatness is smaller than 0.05mm.