With ring spinning high-speed, large packaging, fine winding coupling, development and application of new technology equipment without knots, short roving spinning length, low production efficiency, knots have been resolved. Many unfavorable factors such as denim yarn replaced by rotor spinning yarn are changing rapidly, and spinning has great potential to pick up. Due to some properties of ring spinning, denim is better than open end yarn, such as feel, drape, tear strength, but also because of people's psychological return to nature, the pursuit of the original development of the impact on the style of denim, the important reason is ring Spinning denim clothing after processing, the surface will appear hazy bamboo in line with denim style, personalized needs. Although the ring spiral can be spun out of short and dense bamboo, it also promotes the development momentum of ring-spun denim.