Antibacterial actions against Staphylococcus aureus Terashima were examined with 102 kinds of seeds from wild plants, vegetables and medicinal plants, using hot digested aqueous solutions, and seeds of the following were found effective: coreopsis (Coreopsis Drummondii), forget-me-not (Myosotis scorpioides.), Chrysanthemum cinerariae-folium, and Conium maculatum.