Regularity in forming prescription and use of Chinese medicine is an important part of the modernization research of traditional Chinese medicine. Based on the regularity in combination of Chinese medicine

it is an element of prescriptions combination. If the ratio of medicine dosage in the combination is different

the function will be different. The medication using the formula of Zhang zhongjing's formulas is discussed form the aspects of prescriptions and functions of the medicine combination

and impact on future generations

so as to provide guidance for clinical rational medication.