The present invention relates to herbal medicinal compositions and extracts thereof for inhibiting growth of cancer cells. One of the examples described in the present invention comprises Forsythiae fructus, Menthae Herba, Gardeniae Fructus, Scutellariae Radix, Lophatheri Folium, Glycyrrhizae Radix, Rhei Rhizoma, Na2SO4, and Atractylodis Rhizoma. The residual examples are described herein.