Our study aimed to determine the total contents, antioxidant and antibacterial activity of polyphenols of several medicinal plant species, including Chrysanthemum indicum, Astragalus membranaceus Bge, Lonicera japonica Thumb, Andrographis paniculata, Aloe vera, Glycyrrhiza uralensis Fisch, Vetiveria zizanioides L Nash, Caesalpinia sappan, Coptis chinensis Franch.