Pharmacokinetics-pharmacodynamics(PK-PD)combined model explained the relationship of time-effect-drug concentration in mathematical formula,which could comprehensively analyze and predict a time-response relationship in a certain dosage regimen.PK-PD model valued crucially in drug discovery,clinical trails and rational drug use.This paper analyzed the significance of PK-PD model in medication at home and abroad in recent years,concluding dosage regimen optimizing,predicting efficacy or adverse reactions and...