Cortex Magnoliae Officinalis is the dry trunk bark,branch bark,root bark of Magnoliaceae Magnolia officinalis Rehd.et Wils.or Magnolia officinalis Rehd.et Wils.var.biloba Rehd.et Wils.It's the important traditional Chinese herb.In recent years,its new pharmacological actions have been reported,which are antivirus,antitumour,antibiotic,preventing caries,antiabscess,action of nervous system,easing pain and diminishing inflammation and some other new effect of medicine.The pharmacological actions of Cortex Magnoliae Officinalis are reviewed in this paper.