With the continuous improvement of people's living standards, consumers are increasingly pursuing the concept of green and sustainable development. In the post-epidemic era, the concept of health, green and sustainable development has become the new vane of the textile and apparel industry. . Transmission to the upstream, starting from fiber, to spinning, weaving, dyeing and finishing. In 2020, the trend of sustainable development throughout the entire cotton textile process will become more prominent, whether it is the research and development of the front fiber or the downstream weaving. Cloth dyeing implements the concept of green, environmental protection and health to meet the needs of the end market.