The darkening of the pubic area in women is mainly related to the increased secretion of estrogen as well as frequent sexual intercourse, local friction and gradual ageing. With the increase of age, if married women have sex too frequently, it is easy to stimulate the pituitary gland and cause an increase in estrogen, resulting in symptoms such as darkening of the pubic area. Pregnant women are also prone to darkening and darkening of the pubic area during pregnancy due to increased secretion of progesterone and estrogen. In addition, due to long-term vaginal secretions and local stimulation such as sweat, local skin pigmentation will also occur gradually, causing a dark color. These are normal physiological phenomena and as long as there are no pathological changes, there is no need to worry too much. Keep your pubic area clean and dry, have a healthy lifestyle, avoid straining and staying up late, and keep your mood relaxed to help keep your endocrine secretion normal.