The invention provides a production method for a workpiece with externally lined fluorine. The production method is characterized by comprising the following steps: step 1, conducting pretreatment on a metal blank body; step 2, firstly, conducting spraying on the pretreated metal blank body, and uniformly spraying a PFA coating on the outer surface of the metal blank body, wherein the PFA coating comprises a bottom material, a middle material and a surface material which are sprayed on the outer surface of the metal blank body in sequence; step 3, winding a PTFE (Polytetrafluoroethylene) thin film uniformly on the workpiece, winding glass fiber cloth on the PTFE thin film, and binding the glass fiber cloth tightly; step 4, placing the treated metal blank body in the step 3 into a tetrafluoro sintering furnace for high-temperature sintering, carrying out cooling after sintering, and removing the glass fiber cloth on the surface of the metal blank body; step 5, cleaning the surface, and carrying out a 20 kv high-voltage electric discharging test. The method has the advantages that the product production cost is greatly reduced; the phenomenon that the PTFE fluorine lined layer is separated from a workpiece billet is eliminated; the abrasion resistance is higher.