To obtain a natural chemical antiseptic for avoiding misgivings in which since antiseptics are in heavy usage in the field of foods, cosmetics, building materials, cultural properties protection, etc., and are artificial chemical antiseptics, the influence of an environmental hormone affects organisms including human beings.

This natural chemical antiseptic contains an extract from raw horse radish, ginger, garlic, stalk of Aralia elata, Aralia cordata or kenaf discharged from agriculture and food industry or cultured/wild horse radish, ginger, garlic, stalk of Aralia elata, Aralia cordata or kenaf as an active ingredient. The extract of horse radish, ginger, garlic, stalk of Aralia elata, Aralia cordata, bamboo grass or kenaf has an excellent effect at the result of the examination of antibiotic action of harmless plants such as vegetables, fruits, trees, weeds, medicinal herbs, etc., used for hundreds of foods and food packagings.