Objective : The Purpose of this study was to investigate the Yangseng-method in Tumor, to know how to help the patients from the disease. Method : In order to know the relations between Yangseng and disease, various books and reports are investigated. And the results as follows. Conclusions : According to the traditonal medical theory, Oriental medicine focused on Yangseng(養生). And it is able to resist the disease and adapt to the environment and assist the healing of the body. And it is in harmony with Qi-circulation, so smoothing the circulation of meridians, strengthened Essentialmaterial, Qi, Sprit. Yangseng can be effective for cancer patients to control mind and improve self-confidence and is helpful of preventation of disease and mental health. Especially Mind-control of Yangseng is more important of all.