The production process of monofilament hemp thread includes multiple steps such as picking, soaking, degumming, breaking, screening, cleaning, refining, etc. of hemp fibers. Firstly, harvest mature hemp stems and soak them in suitable temperature and humidity conditions to soften the fibers and remove impurities. Next, degumming treatment is carried out to remove the gum substance on the surface of the hemp fiber, improving the softness and purity of the fiber. Then, the fibers are peeled off from the stem by mechanical or chemical methods, and screened and cleaned to remove impurities. Finally, the refined fibers are fed into a spinning machine for spinning, forming a single filament hemp thread.