Ring spinning is the most widely used spinning method in the market at present. The strip or roving is introduced through the ring and wire, and the bobbin winding speed is faster than that of the wire, also the cotton yarn is twisted into yarn. It is widely used in various short fibers spinning works, such as combing and mixing. The wire ring is turned around the steel collar by the bobbin and twisting around the steel collar. At the same time, the friction of the collar makes its rotating speed slightly slowly than the bobbin. The spinning speed is high and the shape of the ring yarn is a conical spiral, which most of the fiber is transferred inside and outside, so that the fiber is intertwined in the inner and outer parts of the yarn. The yarn is tightly structured, strong and suitable. It is used for thread making, weaving and knitting.