Some women have mouth ulcers during their menstrual period, and some of them have mouth ulcers before and after their menstrual period, which can only be temporarily relieved by some kind of medication, but still appear in the next month when they are menstruating, and the pain is unbearable. At the same time, it is often accompanied by annoying symptoms such as dry mouth, irritability, irritability and dry stools. Chinese medicine believes that the cause of this mouth ulcer is complex, and is related to low autoimmune function, endocrine dysfunction, genetic factors, excessive mental tension, fatigue, etc. As long as the cause is identified, the right medicine will have some effect. Chinese medicine analysis of recurrent mouth ulcers are as follows: 1, blood deficiency type mouth ulcers: this disease occurs in the lips, tongue, cheeks, ulcer surface is often grayish white, slightly red and swollen around, this healing, continuous. After healing, there is no trace of the ulcer, accompanied by pain at the ulcer and head pain, and headache pulling the brow bone pain, increased menstrual flow, fatigue, palpitations, restlessness at night and other symptoms, because the body is weak blood deficiency, plus the menstrual cycle blood deficiency is even worse, blood can not moisten the brain to produce headaches. The disease often occurs in the lips, gums, tongue and cheeks, the ulcers are yellowish white, surrounded by redness and swelling, the number of even fused into pieces, pain is intense, while the top of the head pain, dizziness, dizziness, irritability, mouth bitterness and other symptoms. The headache and mouth ulcer are caused by the deficiency of yin and blood and the inability to suppress liver and yang, so usually pay attention to lowering liver fire and take gentian diarrhea liver soup for effective treatment; 3. The location is fixed, the menstrual color is purple and dull, there are bruises, such as long-term untreated, easy to lead to aggravation of the disease. In the prevention and treatment of women’s menstrual ulcers, it is also necessary to keep a happy mood, pay attention to the combination of work and rest, adhere to the course of medication, avoid excessive fatigue, diet should be light, eat more fruits, fresh vegetables, and drink more water. In the process of treatment, the best policy is to not eat spicy, spicy and tasty foods.