Primary dysmenorrhea, as one of the common diseases in adolescence, interferes with many adolescents' life, study and exercises. Dysmenorrhea refers to pain, distending and bearing-down sensation in lower abdomen, limp loin and some other discomfort which disturbs work and daily life before, after or during menstruation. It can be divided into primary and secondary dysmenorrhea. Primary dysmenorrhea, which also manifests as pain, distending and bearing-down sensation in lower abdomen during meno-period, has no organic change in genital organs and thus is called functional dysmenorrhea. Reports showed that nearly half of the sex mature women have the history of dysmenorrhea.The pain sensation of primary dysmenorrhea, showed by medical studies, is multi-originated. The cause of it may be the over- contraction of uterine muscles, ischemia of uterus, influences of nerves and neurotransmitter as well as the secretion of prostaglandin, and these pathological changes could be due to mechanical, endocrine, genetic, mental, nerve and neurotransmitter factors and many others. Many evidences show that the increased synthesis and secretion of prostaglandin are important causes of primary dysmenorrhea, and those who suffered from the disease do have a markedly higher level of prostaglandin in endometrium than average woman. Another important cause proved by many studies is angiotensin. When combined with its corresponding receptors in uterus, it can cause contraction of uterine muscles and those small blood vessels in between, thus resulting in local ischemia and pain. It is said patients with dysmenorrhea would have one time higher concentration of angiotensin in their bodies than healthy people, and they are more sensitiveto angiotensin than people without the disease. Recent researches indicate that oxytocin not only directly effect on uterine muscles to contract, but stimulate endometrial cells to release PGs—again causing uterus' s contraction. Patients with dysmenorrhea generally have higher oxytocin rate than healthy non-pregnant women, which also supports oxytocin can cause dysmenorrhea.In Traditional Chinese Medicine, dysmenorrhea is thought to be caused byemotional factors and six exopathic factors, which result in obstruction inThoroughfare and Conception Vessel;or is caused by weak constitution, whichleads to insufficient nourishment for uterus. Menstruation is transformed formblood and blood is transported by qi, so if qi and blood is sufficient andharmonious, there will be regular menstruation without any pain. Otherwise,in circumstance, such as emotional upset or pathogenic cold in uterus, whichleads to stagnation of qi and blood, painful menstruation will be caused. Andin the state of qi and blood deficiency and malnourishment of uterus it maycause dysmenorrhea as well. According to the etiology and pathogenesis,dysmenorrhea can be classified into four syndromes, which are syndrome of qistagnation and blood stasis, syndrome of cold-damp stagnation, syndrome ofdamp-heat in liver and syndrome of qi and blood deficiency. Based on differentsyndromes, Traditional Chinese Medicine lays out corresponding principles andremedies of treating dysmenorrhea, and its approaches can be various includingusing both internal and external ways which could have very ideal curativeeffect. Point application, as one of the approaches, has many advantages intreating the disease: it is safe and has less side-effect;the herbs appliedto local points can be easily absorbed;its manipulation is simple and thuscan be popularized;and most of all, it does have ideal quick effect, leavingneither scars nor pains during treatment. Because of these, it offers patientswho can not take internal Chinese herbs or those afraid of acupuncture ano-side-effect way of curing the disease.Common treatment of dysmenorrhea in western medicine mainly lies in the application PG synthesizer blockers, oral contraceptives and P-receptor blockers and surgeries. In this research, control group treated with western medicine could only have temporary alleviation of symptoms. Patients in the group had to take medicine every month and the long-term effect is not satisfactory, not to mention the marked side-effect of the analgetic. Bycomparison, point application, as a traditional therapy, has far better long-term effect than that of the control group, and thus is a recommendable method that should be popularized.