The invention discloses cotton, ramie and bamboo blended grey yarns. The cotton, ramie and bamboo blended grey yarns comprise the following components in percentage by weight: 40 to 60 percent of pure cotton fibers, 20 to 30 percent of ramie fibers and 15 to 20 percent of bamboo fibers. According to different using fields of a fabric; the weight ratio of the components can be adjusted correspondingly; three fibers are produced by adopting an embedded blending process. The cotton, ramie and bamboo blended grey yarns integrate the advantages of the cotton fibers, the ramie fibers and the bamboo fibers, have a unique style, high strength, high abrasion resistance, drapability, a soft hand feeling, excellent dyeing performance, high breathability, excellent moisture absorption property, excellent moisture desorption property, a silk-like feeling, are cool and comfortable to wear, are high-end apparel shell fabrics, and are suitable for making T-shirts, high-end fashionable dresses, high-end shirts, underwear and bedding articles.