Abstract
IM Won-jun(任元濬, 1423~1500) was an Confucianism Doctor in the former period of Joseon Dynasty. Through IM Won-jun's historical trace we could know the range of Uiseoseubdoggwan(Medical Learning Officer)'s duty not limited to study medical books at that time but extended to medical treat, educate, recommend medical policy, personnel manage, carry out administrative work, carry out all the works concerned with medical books, make new medicines at different official period. Among these after learning duties the Royal Family of the Joseon Dynasty awarded high grades to medical treatment for king and king's mother, but from the viewpoint of advancement of medicine controling the top of medical policy as a chief of Jeonuigam had important meaning. The system of Uiseoseubdoggwan(Medical Learning Officer) in the Joseon Dynasty played the role of cultivating widely the man of ability who leaded medical development by sharing the man of ability between medicine and confucianism which was dominant learning at that time, so the knowledge and professional skill of medicine, Yin-Yang and the Five Elements theory, the spirit of relief of the world were spreaded across to national administration, education, publication culture, putting philosophy of filial piety into practice in the Joseon Dynasty.