Dong Yi Shou Shi Bao Yuan has four volumes and 625 articles. The first volume consists of life theory, four-terminal theory, expansion theory and viscera theory, which is the basic theoretical part, and creatively expounds the holistic view of "heaven, man, sex and life", yin-yang theory, four-image theory, four-image viscera theory, four-image etiology and pathology, four-image diagnostics and medicine prescriptions, laying a foundation for Korean medical theory and clinic. The second volume consists of the theory of medical source, the theory of exterior heat of Shaoyin people, the theory of internal cold disease of Shaoyin people, the general theory, 42 empirical prescriptions and 24 new prescriptions, focusing on the relationship between Zhang Zhongjing's six channels of typhoid fever and the four images, putting forward a unique theory of "the disease syndrome lies in people" and expounding in detail the theory that the four images of typhoid fever are Shaoyin people's kidneys. Taiyin people's stomach is cold with exterior cold, and liver is hot with interior heat, while Taiyin people have exogenous lumbar spondylosis and enteropathy, so the treatment principles of "syndrome differentiation and treatment", "different diseases with different symptoms" and "different diseases with the same symptoms" are put forward. The third volume consists of shaoyang people's theory of exterior cold disease, shaoyang people's theory of interior fever and general discussion, with 9 empirical prescriptions 19 and 7 new prescriptions 17; The fourth volume consists of Taiyin People's Treatise on Exterior Cold Diseases, Taiyin People's Treatise on Fever, 13 Empirical Prescriptions and 24 New Formulas, 12 Empirical Prescriptions and 2 New Formulas, as well as Guangji Theory and Syndrome Differentiation Theory. The theory of "extensive economic" expounds the theory of preventive health care, emphasizing the influence of people's mental and psychological cultivation, living habits and labor on health and the importance of health publicity and education.