Subjects : A literature research on the constitution and medicinal effect & adaptation diseases of Bullsusan. Bullsusan is a herbal prescription composed of Angelicae Gigantis Radix(當歸) and Cnidii Rhizoma(川芎). Objectives : Through the researching on the records of Bullsusan in Korean Traditional Medical Books, gain the literature evidence for adaptation to these days child as a keeping herbal medicine. And have detailed consideration on the constitution of prescription and medicinal effect & adaptation diseases of Bullsusan. Methods : First, researched the records of Bullsusan in Korean Traditional Medical Books which were included at A Series of Korean Medicine(韓國醫學大系) and analysed component ratio, nickname, herbal manufacture and drug processing method, medicinal effect and adaptation diseases. Second, referred related Korean and Chinese researches that examined the medicinal effect and adaptation diseases of Bullsusan by scientific experimentation. Conclusions : We found total 46 records of Bullsusan from 20 kinds of Korean Traditional Medical Books included at A Series of Korean Medicine. Prescription component ratio of Angelicae Gigantis Radix and Cnidii Rhizoma were 3:2, 1:1, 2:1, 1:1. 3:2 had most 20 records and 1:1 had second 14 records. Especially 1:1 had a tendency of having nickname Goonguitang, but not must had. First herbal manufacture was powder, it had 8 records. First drug processing method was decocting with water and alcohol, had 19 records. Medical Effects of Bullsusan can be induced to next 8, that were remove get bad give birth new blood, easy by reducing fetal volume, acceleration of labor, test of fetal survival, of dead embryo, elimination of placenta, revive, allaying pain, nourish the blood. From these medical effects, 9 adaptation diseases can be induced. That were threatened ache and vaginal bleeding by spontaneous pre-labor keeping(prevention of labor), acceleration of labor, hard labor, missed postnatal vaginal bleeding, dizziness, asthma, headache, womb ache, postnatal mastoptosis and mastodynia, first aid symptom like as dizziness, unconsciousness, stroke caused by excessive bleeding. The medical effect of acceleration of labor and elimination of placenta have been examined by modern clinical research. The effect of remove get bad give birth new blood, allaying pain and nourish the blood have been examined by modern experimental study. But overdosing on Bullsusan to pregnant mouse can cause natural abortion, so the proper dose of Bullsusan in pregnant period is very important.