Pepper water can cure yin itch in gynecological diseases. Pepper belongs to the same source of medicine and food, with the effect of warming the middle and relieving pain (relieving pain by warming the spleen and stomach), killing insects and relieving itch. Specific use should be under the guidance of a doctor. Peppercorns can be used to treat cold pain in the epigastrium (feeling cold pain in the stomach and abdomen), vomiting and diarrhea, and abdominal pain caused by worms; and externally to treat eczema and itching in the pubic area. Clinically, peppercorns can be used to treat women with intolerable vaginal itching, and can be used together with Wu Zhu, Snake Bed Seed, quinoa and other medicines, decocted in water and smoked. It should be noted that the person who is weak in yin and fire is forbidden to take pepper. Pregnant women should not take pepper. If you need to use pepper water, you should use it reasonably under the guidance of the doctor’s diagnosis.