The core charm of EM- moisture-absorbing and perspiration-wicking cross polyester staple fiber lies in its extraordinary ability to absorb and conduct moisture. The unique cross-section structure, like a micro-duct, effectively increases the fiber surface area, accelerates the rapid absorption of sweat from the skin surface and quickly diffuses it to the outer layer of the fiber, and then quickly evaporates through the surface of the fabric, ensuring that the skin is kept dry and comfortable for a long time, and even high-intensity exercise can enjoy worry-free comfort. The EM-series fibers are treated with special processes and feel extremely soft, fitting and light like a second layer of skin. At the same time, its good breathability design allows air to flow freely and reduces the feeling of stuffiness. As a multifunctional fiber, EM- moisture-absorbing and perspiration-wicking cross polyester staple fiber can not only be processed into cationic dyeable fibers and cationic easy-to-dye fibers, which broadens the color selection and application range, but also because of its performance, it is particularly suitable for the production of sports and leisure clothing fabrics and socks. Whether it is the competitive equipment of professional athletes or the fashionable items for daily leisure, it can be perfectly integrated to meet the diversified needs of the market.