Menstrual pain is called “dysmenorrhea” in Chinese medicine. Its occurrence is mainly related to factors such as cold condensation and blood stasis, qi stagnation and blood stasis (blood stagnation due to lack of qi flow), and dampness-heat accumulation (dampness and heat evils accumulate with each other in the body), etc. It can be treated with Shao Abdomen and Expel Blood Stasis Tang, Diaphragm Underneath and Expel Blood Stasis Tang, and Clearing Heat and Regulating Blood Tang. 1. Cold-congealed blood stasis: manifested as pre-menstrual or menstrual period, cold pain in the abdomen that refuses to be pressed, pain that decreases when there is heat, delayed cycle, scanty amount of menstrual blood, dark-colored and lumpy, fear of cold and cold limbs (fear of cold, cold limbs), greenish-white complexion and so on, Shaohuayouhuayu Tang can be chosen as the treatment. Pregnant women should not take it. 2. Qi stagnation and blood stasis: manifested as pre-menstrual or menstrual period, abdominal distension and pain refusing to be pressed, scanty menstrual flow, poor menstrual flow, purplish and dark color with lumps, pain and decrease in pain under the lumps, distension and pain in the chest and ribs, breast, etc., and it can be treated with Diaphragm and Underlying Blood Stasis Soup. 3. Dampness-heat embedded within: manifested as pain or distension in the abdomen with burning sensation before or during menstruation, or pain connecting to the lumbar and sacral regions, heavy menstruation or long menstruation period, dark red in color, thick in texture or blood clots, etc., and it can be treated with Heat-cleansing and Blood-regulating Soup. 4. Weakness of qi and blood: manifested as hidden pain in the abdomen and liking to be pressed, scanty menstrual flow, pale in color and thin in texture, fatigue (mental exhaustion and physical weakness), dizziness and palpitation, pale face, insomnia and dreaminess, etc., can choose Shengjie Tang for treatment. 5. Liver and kidney deficiencies: manifested as lingering pain in the abdomen, fond of pressing, lumbosacral pain, scanty menstruation, dull complexion, insomnia and forgetfulness, etc., can choose Beneficial Kidney and Regulating Menstruation Tang for treatment. The adverse effects of the above drugs are not clear, it is recommended to take under the guidance of a doctor.