The pain in the anal area of women during menstruation is caused by two reasons: 1. the stagnation of menstrual blood during menstruation due to changes in the level of hormones, especially the return of blood to the veins around the anus, causing pain around the anus, which is a normal physiological phenomenon and can be relieved by applying heat to the anus and massaging the muscles around the anus, after the period. The symptoms of anal pain will gradually disappear. 2, the women themselves appear around the anal disease caused by the symptoms of anal pain during menstruation, including anal fissures and hemorrhoids, etc.. In particular, anal fissures can form many tiny fissures around the anus and rectal canal, and these fissures can cause anal pain during menstruation when women experience stagnation of qi and blood.