The embodiment of the invention discloses a cutting pick for a coal cutter, comprising a connecting shaft portion and a cutting top cap, wherein the connecting shaft portion and the cutting top cap are integrally formed, and the outer surface of the cutting top cap is provided with a plurality of internal sunk clamping groove; the invention also discloses a processing method of the cutting pick for the coal cutter, comprising the steps of blanking and refining; spheroidizing annealing, taking a workpiece out of a combustion chamber, and controlling the cooling rate of the workpiece; blasting to remove oxidation, grinding and polishing an oxide layer on the surface of the workpiece, and cleaning oil stains on the surface of the workpiece; performing primary phosphorus saponification; performing primary cold extrusion; performing acid cleaning; performing secondary phosphorus saponification; performing secondary cold extrusion; processing an outer circle; according to the cutting pick and the processing method thereof of the invention, through a mode of rare air isolation convection and hot water cold-control cooling, the cost of workpiece cleaning is reduced, and the adhesion of a subsequent phosphorus soap-treated film is improved; in addition, a phosphating reaction tank of the invention can selectively control ion permeation to prevent phosphating slag from approaching the surface of the workpiece and affecting the quality of a phosphate film, thereby increasing the adhesion and corrosion resistance of a phosphating film coating.