The precise spraying process is developed by the disperse milling technology for highly waterproof, permeable, and breathable functional textiles. It improves the process from traditional coating to digital precise spraying of new functional fabrics. This technology resolves the water consumption, power consumption, and chemical pollution problems for conventional dyeing processes and the difficulty of small-volume large-variety development for finishing processes. With the advantage of digital precision, this technology provides businesses with customized mass production and sales models with high flexibility, short delivery time, low cost, and interactive design to increase the additional values of products by over 30%.