At the end of last century, a kind of so-called "ecological clothing" appeared in the west. According to reports, this kind of clothing basically uses natural raw materials, and uses artificial materials as little as possible to reduce human factors. Clothing fabrics are made of pure cotton and hemp, dyed directly with biological or mineral dyes and pigments without scouring and bleaching, and even buttons are made of wood. The colors of clothes strongly imitate nature. 1995 At the international exposition held in Frankfurt, Germany, most of the clothes exhibited in European countries had this color tone. For example, the Dutch "earth" color series and the French "natural" color series, these natural colors are flax, rice and wheat, beach and ocean.

Practice has proved that the safety of textiles and the cleanliness of the production environment are largely related to the raw materials for producing textiles. Using natural raw materials to produce ecological textiles is in line with the desire of human beings to return to nature. But regression is not a simple cycle of things returning to the starting point, but a development to a higher stage. Therefore, natural raw materials, mainly fibers, pretreatment materials and dyes, need to be fully understood and then selected and transformed.