The invention relates to a Chinese herbal medicinal bactericide, which aims to solve the problem of public hazards of the conventional bactericide. The bactericide comprises the following Chinese herbal medicines in part by weight: 40 to 120 parts of sessile
stemona root, 40 to 120 parts of
camphor tree, 35 to 105 parts of pomegranate rind, 35 to 105 parts of
macleaya cordata, 35 to 105 parts of common
andrographis herb, 35 to 105 parts of
isatis root, 30 to 90 parts of barberry root, 30 to 90 parts of vietnamese
sophora root, 30 to 90 parts of common fibraurea stem, 30 to 90 parts of densefruit pittany root-
bark, 30 to 90 parts of
officinal magnolia bark, 30 to 90 parts of common threewingnut root, 25 to 75 parts of
akebia stem, 25 to 75 parts of oriental variegated coralbean
bark, 25 to75 parts of fourstamen
stephania root and 25 to 75 parts of humifuse
euphorbia herb. The bactericide is prepared by the following steps of: performing
ethanol precipitation on the Chinese herbal medicines to obtain the original liquid
medicine; diluting
sodium usnic acid by using a
solvent; and adding 0.1 to 0.3 weight percent of diluted
sodium usnic acid into the original liquid
medicine. The finished Chinese herbal medicinal bactericide comprises 0.3 percent of stemonine, is
brownish red, has the pH value of 7 to 8 and the density of 1.10g / cm<3>, and has the advantages of capability of effective sterilization and no damage to humans.