Baicalin and baicalein are the main effective components in Scutellaria Baicalensis Georgi and possess extensive pharmacological activities. Besides the traditional applications of anti-inflammation, anti-metamorphosis, antivirus and anti-hot & liver-protection, the materials have other effects, such as anti-oxidation, anti-tumour and anti-HIV-1 virus which are being investigated increasingly. The studies on extraction and purification of baicalin and baicalein were reviewed and the methods used were analys...