A remelting type thread element for a parallel dual-screw extruder and a method for manufacturing the same are disclosed. The thread element includes a body (101) and a nickel-based tungsten carbide spray welding layer (102). Wherein, the nickel-based tungsten carbide spray welding layer is uniformly and eccentrically remelted on the external surface of the body. The manufacturing method comprises a steel billet casting process, a spray welding process, a remelting process and a machining process. The wearing resistance and corrosion resistance of the thread element are superior to the property of the domestic high-speed tool steel; it has reasonable structure, advanced process and low cost. The thread element has high property and price ratio, better social and economic benefit, and wide popularization and application value.