There are many types of sanitary napkins, such as cotton sanitary napkins, negative ion sanitary napkin, herbal sanitary napkins, and so on. Today is mainly to understand the benefits of pure cotton sanitary napkins. Cotton fabric is made of cotton as raw material, woven through weaving machine, weft and weft yarn interweave each other. At present, the actual processing of cotton sources are divided into primary cotton fabric and regenerated cotton fabric. The main characteristics of pure cotton are as follows: (1) hygroscopicity: Cotton fiber has good hygroscopicity. Under normal circumstances, fiber can absorb moisture into the surrounding atmosphere. Its moisture content is 8-10%, so it touches human skin and makes people feel soft and not rigid. If the moisture content of cotton is increased and the ambient temperature is higher, the water content in the fiber will evaporate away, so that the fabric can maintain water balance and make people feel comfortable. (2) Thermal insulation: Because the cotton fiber is a poor conductor of heat and electricity, heat conduction coefficient is very low, because the cotton fiber itself has a porous, high elastic fiber can accumulate a large number of advantages, between air and air is a poor conductor of heat and electricity, so the cotton fiber fabrics with good insulation, wearing cotton textiles and clothing to make people feel warm. (3) heat resistance: Good heat resistance of pure cotton, at 110 centigrade below, will only cause the fabric of moisture evaporation, the fiber is not damaged, so the cotton fabric under normal temperature, wearing, washing and dyeing have no effect on the fabric, thus to improve the wearability of durable washable cotton fabrics. (4) hygienic nature: Cotton fiber is a natural fiber, its main component is cellulose, containing a small amount of wax like substances and nitrogen containing substances and pectin. Pure cotton fabric through many aspects of inspection and practice, fabric and skin contact without any stimulation, no side effect, long wear for the human body is harmless, health performance is good. There are many characteristics of pure cotton fabrics, and the advantages of pure cotton sanitary napkins are also quite a few. In short, the advantages of pure cotton sanitary napkins are soft, breathable and absorptive.