Environmentally friendly dyeing technology has quickly become a hot topic in the textile industry and has had a profound impact on reducing environmental pollution and saving resources. Although the traditional dyeing process has a long history, it has significant environmental deficiencies, which are mainly reflected in the consumption of large amounts of water resources and the generation of harmful wastewater, making it particularly urgent to find new environmentally friendly technologies. **Early exploration: attempts at low-pollution processes** At the end of the 20th century, when environmental protection issues became increasingly prominent, the textile industry began to explore various low-pollution dyeing processes. Although some improved processes can reduce pollution to a certain extent, the overall effect is not ideal. In addition, these technologies are often difficult to meet commercialization requirements in terms of cost and efficiency. Therefore, at the beginning of the new millennium, the research, development and application of environmentally friendly dyeing technology entered a bottleneck period. **Gradual breakthrough: the gradual application of environmental protection technology** In the late 2000s, emerging technologies such as waterless dyeing and ultrasonic dyeing were gradually developed and put into use. Waterless dyeing technology significantly reduces water consumption by using supercritical fluids as dye carriers. At the same time, ultrasonic dyeing uses ultrasonic waves to activate and penetrate dye molecules, improving dyeing efficiency and reducing pollutant emissions. **Technical advantages: win-win for environmental protection and efficiency** At present, environmentally friendly dyeing technology has shown its significant advantages. First of all, environmentally friendly dyeing technology effectively reduces the demand for water resources. For example, waterless dyeing technology almost completely eliminates the use of water, making the process significantly more environmentally friendly. In addition, ultrasonic dyeing not only improves the consistency and fastness of dyeing, but also significantly shortens the dyeing time, thereby reducing energy consumption. According to industry reports, these technologies can reduce dyeing costs by about 30%, giving companies significant advantages in market competition. **Future Outlook: Comprehensively promote green textiles** In the future, environmentally friendly dyeing technology will continue to develop in the direction of digitalization and intelligence. With the integration of artificial intelligence and Internet of Things technologies, these environmentally friendly technologies will achieve higher automation and precise control, thereby further improving dyeing efficiency and product quality. At the same time, with the increasing global requirements for environmental protection, more textile companies will accelerate the application of environmentally friendly dyeing technology to comply with the development trend of green economy. With the help of environmentally friendly dyeing technology, the textile industry is about to enter a new era of green development. This will not only help achieve sustainable development goals, but also win more opportunities in the fierce market competition. We expect that environmentally friendly dyeing technology will bring brighter prospects to the textile industry.