The invention discloses a botanical biopesticide which comprises the following substances in parts by weight: 15-27 parts of KPT EC (emulsifiable concentrate), 3.5-6.5 parts of monoammonium phosphate, 12-18 parts of carclazyte, 3-6 parts of furfuran resin, 11-19 parts of queretagetin, 5-10 parts of glyphosate isopropylamine, 15-25 parts of alternaria tenuis, 15-30 parts of oleic acid, 5-17 parts of vaseline, 3.5-6 parts of sodium sorbate, 20-30 parts of isopropanol, 5-7 parts of gastrodia elata, 11-18 parts of ricinoleate polymer, and 45-62 parts of eugenol. The botanical biopesticide can prevent and control various crop diseases, reduces the dose of pesticides, lowers the pesticide use cost of farmers, adopts a pure plant solvent, is low-carbon and environmental-friendly, reduces the pollution and hazard to the environment, and is safe and environmental-friendly to use.