Literatures about promoting absorption of oral drugs by borneol are analyzed.It is usual that the oral bioavailability is poor.Appling a safe and effective absorption enhancer to increase oral bioavailability is becoming a focus.This paper mainly reviews three methods about promoting absorption of oral drugs（in situ

in vitro and in vivo）.Research showed that the effect of borneol on regulating the absorption of oral drugs was related to the drug structure and concentration

species

concentration and usage of borneol

but the mechanism of absorption is uncertain.Therefore

for the drugs of poor bioavailability of poor solubility and rapid metabolism

the development status of borneol will provide references for further research on borneol promoting absorption.