The present invention relates to Chinese medical compositions and extracts thereof for inhibiting growth of cancer cells. One of the examples described in the present invention comprises Forsythia suspense (Thunb.) Vahl, Mentha haploclyx BRIQ., Gardenia jasminoides Ellis, Scutellaria baicalensis Georgi, Lophatherum gracile Brongniart, Glycyrrhiza uralensis Fischer et DC, Rheum palmatum Linne, Na2SO4, and Atractylodes lancea De Candolle. The residual examples are described hereinafter.本發明關於抑制癌細胞生長之中藥組成物及其中藥萃取物,其中一態樣包括:連翹、薄荷、梔子、黃芩、竹葉、甘草、大黃、朴硝以及蒼朮,其餘態樣如說明書所述。