The philosophy of "

sheng sheng

（生生）"， to continuously generate li

vings， is the core concept of traditional Chinese medicine （TCM） culture and clinical practice， originating from the "y

i

（易）" in the

Book of Changes

（《周易》）. The principle of "generation out of constraint" originates from the five circuits and six

qi

in the

The Inner Canon of Yellow Emperor

（《黄帝内经》）， based on the retriction or non-restriction of the five phases. By explaining the origins and philosophical connotations of "

sheng sheng

" and "generation out of constraint"， it is found that the ideological connotations of both are rooted in the

Book of Changes，

and contradiction and constraints are the basis for the generation， development， and evolution of all things. Based on the discussion of the internal relationship between "generation out of constraint" and "

sheng sheng

" from the perspective of the restriction between

yin

and

yang

and the five phases， it is found that mutual regulation of

yin

and

yang

is a prerequisite for the harmony between heaven and earth， while the mutual storing of

yin

and

yang

is the internal mechanism of "generation out of constraint"； the mutual generation and restraint of the five phases are the mechanisms underlining the creation of heaven and earth， and the benefits and harms arising from their interactions are the means of "

sheng sheng

". "Generation out of constraint" constitutes the fundamental attribute of "

sheng sheng

"， while moderation within regulation provides its guiding principle. It embodies the dialectical view of contradiction in which mutual restriction gives rise to mutual generation， serving not only as the foundation for the basic theory of TCM， but also as an important guide for clinical practice.