Symmetry is a common correspondence phenomenon and connection among things on the aspects of structure

function

space

time

etc. Symmetry generally exists in natural world and natural science. Chinese medicine

included in natural science

also has symmetry. Prescription

as one of the main tools of treatment based on syndrome differentiation

also has symmetry. The authors propose that the patterns of manifestation of prescription symmetry mainly include two types

symmetry in one prescription and symmetry in different prescriptions. The corresponding relationship of the two types both mainly manifests as concerted application symmetry

effect symmetry

as well as disease and syndrome mainly treated symmetry. The authors holds that the function and significance of prescription symmetry mainly includes that it is beneficial in explaining the structure and composing significance of prescription

it is in favor of deducing and expanding the disease and syndrome mainly treated of prescription

as well as it is helpful in guiding prescription deduction and creating new prescription.