Thirty-one medicinal plants in Korea are screened for anticholinergic and oxytocic activity The extracts of Cyperus rotundus L. and Scutellaria baicalensis showed anticholinergic action and other seven kinds of extracts showed weak action. The oxytocic action is observed with Tarraxacum platycarpium and Albizzia julibrissin $D_{URZ}$.