Objective : In South Song era, Choe Gaeon(崔嘉彦) built Seowonam(西源庵), lived as a hermitand communicated with Juja(朱子) in LuShan(廬山), JiangXi province(江西省), JiuJiangcity(九江市). Maekgyeol(脈訣) written by him significantly influenced the forthcomingmedical doctors, who took over his studies and were called the school of Seowon. Little information about his life and his successors encouraged this study. Method : The core contents of Maekgyeol(脈訣), his life based on Waryongamgi(臥龍庵記) andSeowongamgi(西源庵記) written by Juja(朱子) and his successors on the basis of variousmedical books were investigated. Result : The Seowonam(西源庵) is located at the entrance of xiufeng Scenic spot(秀峰景區) whichis 6km west from center of Xingzi county(星子縣), JiangXi province(江西省), JiuJiang city(九江市). The points of Maekgyeol(脈訣) are inferring the symptom of wind, energy, coldand heat by categorizing seven exterior and eight interior pulse into four pulses offloat, sink, slow and quick and diagnosing a disease of three warmer and the fiveviscera and the six entrails by subordinating four pulses to Chon,Gwan, and Cheok(寸關尺). By writing the book of Sawonron(四原論) he clarified the clinical point, pulse,disease, symptom, treatment with learning the cause of a disease through pulse,understanding the symptom through a disease, and giving a remedy through a symptom. Then he communicated with Juja(朱子) assigned to NanKangJun(南康軍) as a ruler. He helpedJuja(朱子) to build Waryongam(臥龍庵) and Juja(朱子) wrote Seowonamgi(西源庵記) for him. Conclusion : The members of medical doctors of the school of Seowon were Choe Gaeon(崔嘉彦) andhis follower Yu Gae(劉開), Yugae's disciple Eom Yonghwa(嚴用和) and Ju Jongyang(朱宗陽)and Ju Jongyang'sdisciple Jang Dojung(張道中). They, who were famous for pulse, hadcontributed to advancing study of pulses in the field of oriental medicine.