Gamdutang aqua-acupuncture solution (GAS), Gamdutang water-extracted solution (GWS) and Dae-Gamdutang aqua-acupuncture solution (DGAS) were prepared and tested for antitumor activities. It was shown to possess considerable toxicity toward various tumor cell lines. Concentration of 5 $ imes$ and 10$ imes$ of GAS resulted in more than 70% inhibition of growth in Ehrlich ascites tumor cells (EATC), Hepa1c1c7 and A549. GAS at concentrations of 5$ imes$ and 10$ imes$ revealed more than 60% inhibition in HeLa. GWS showed more than 50% inhibition of growth with EATC and HeLa at concentrations of 5$ imes$ and 10$ imes$, respectively. Toxicity assay with GWS in Hepa1c1c7 and A549 revealed that more than 80% inhibition of growth at the concentration of 5$ imes$ and 10$ imes$. In morphological study, the number of cells were decreased, and the shape of cells was round-form in EATC, Hepa1c1c7, A549, HeLa with GAS.