Cotton waste recycling machine processes daily by-products from spinning mills, including carding waste, combing waste, flat strip waste, floor sweepings, comber waste, and flying fibers. Through three stages—opening, combing, and impurity removal—it progressively separates dust, fine particles, metal shavings, and short fibers, producing clean recycled cotton with good fiber length and low impurity content, suitable for blending or baling and sale. The complete line includes an automatic cotton picker, metal spark detector, three-roller cleaning machine, carding machine, and automatic baler, enabling fully automatic operation from input of waste material to output of finished product. With a production capacity of 150–250 kg/hour, the system can be customized according to waste type, output requirements, and available space.