By studying the process of refining the core values of traditional Chinese medicine（TCM） culture into the four characters of Ren（仁）

He（和）

Jing（精）

and Cheng（诚）

the paper expounded the four levels of them

which are the heart

the doctrine

the skill

and the morality of the doctor. Ren（仁） meaning kindheartedness

is the starting point of TCM and Chinese medicine practitioners. It is the conviction of practitioners

which is manifested in the benevolence of their medical skills and behaviors. He（和） meaning harmony

is the concentrated expression of the core values and ways of thinking of TCM. It is the essence of TCM

which is expressed in the view of nature as harmony between man and nature

in the view of society as harmony between man and self

in the view of the body as unity of physique and mental state

and in the concept of treatment as unity of yin and yang. Jing（精）meaning excellant

is the fundamental requirement for mastering the healing art of TCM. It is manifested that those who learn TCM should explore the medical sources

and be diligent and tireless

and those who make researches should be concentrated and attentive

as well as think carefully to understand. Cheng（诚） meaning honest

is the general requirement for the ethics and behavioral norms of TCM practitioners. It is manifested that doctors must be sincere and honest to patients

and must treat them with sincerity and keep faith without deceiving. And for themselves

they must restrain themselves in privacy and be self-discipline and integrated.