Dysmenorrhea is one of the most common symptoms in gynecology, and about 50% of women have dysmenorrhea, of which 10% have severe dysmenorrhea. The pain of dysmenorrhea varies, usually the most intense on the first day of menstruation, and in severe cases it is spasmodic, radiating to the lumbosacral region and inner thighs, sometimes accompanied by nausea, vomiting, diarrhea, dizziness, weakness, and in severe cases, pallor and cold sweat. Primary dysmenorrhea is induced by prostaglandins released from the endometrium, which induce contraction of the smooth muscle of the uterus and produce spasmodic cramps in the lower abdomen like childbirth, while secondary dysmenorrhea is caused by organic lesions of the reproductive organs and is accompanied by symptoms related to other primary diseases. The higher the level, the heavier the pain. Level 1 is unnoticeable pain, such as mosquito bites; level 7 is strong pain, such as being beaten with a stick; and level 12 is the highest level of pain, such as labor pain. The grading of pain varies according to the patient’s self-perception of dysmenorrhea, which can reach grade 8 for more severe dysmenorrhea. If the level of dysmenorrhea is unbearable and seriously affects life and work, prompt hospital consultation is required to diagnose and treat it.