The invention discloses a method for producing a ramie combed yarn by cutting cotton. The method comprises the following steps: taking refined ramie as the raw material, sequentially softening the ramie, cutting the ramie, opening and picking, carding, pre-drawing, coiling a strip, combing, drawing, roving and spinning, wherein a process of drawing is added between a process of softening the ramie and a process of cutting the ramie and is characterized by comprising the steps of drawing and straightening the refined ramie, then cutting the fiber into cotton length which is 30-40 mm, and spinning and processing via a cotton spinning device. According to the method, fiber agglomerates and fiber knots formed by bending and twisting the fiber in the refined ramie are eliminated or reduced; meanwhile, the fiber is straightened to be parallel to a certain extent, so that the existence of super-long fibers, ramie particles and hard strips after the ramie is cut can be reduced; the good conditions are created for elaborate processing such as combing the ramie on the cotton spinning device and the smooth drawing of the subsequent spinning process.