Although the production of recycled cotton yarn has realized the recycling and comprehensive utilization of textile waste, consumers are not aware of it enough. In foreign countries, the price of recycled textiles is often 10%~20% higher than that of ordinary textiles, but in China, it is difficult to get rid of the image of low-grade and cheap. Incidents such as the "black-hearted cotton" have also made many people resistant to recycled textiles. In fact, the main raw material of recycled cotton yarn is the rags produced in the process of producing clothing, which are all new and are not the same concept as second-hand clothing and old clothes that people usually understand.