A method for producing a POY (pre-oriented yarn) by FDY (fully drawn yarn) equipment comprises the steps of S1, adding a low-friction oil nozzle treated by a plowing technology below a spinning box; S2, removing a winding oil reel, a first hot roller, a second hot roller, a first filament dividing roller and a second filament dividing roller from the FDY equipment, and adding a first filament guiding disc and a second filament guiding disc between a pre-interlacing device and a main interlacing device; S3, moving an ACW-FDY winder inwardly along its axis, and allowing the second filament guiding disc, the main interlacing device and the ACW-FDY winder to be positioned on the same vertical line; and S4, after the modification is finished, oiling tows through the oil nozzle below the spinning box, treating with the pre-interlacing device, passing through the first filament guiding disc and the second filament guiding disc, treating through the main interlacing device, and winding throughthe ACW-FDY winder to obtain the finished POY. Based on the original equipment platform, new varieties which are not matched with the original equipment model are produced, so that enterprise competitiveness is improved.