Carbon tetrachloride is a colorless and clear liquid, insoluble in water. Carbon tetrachloride is an anthelmintic drug and is effective against Fasciola fasciola in cattle and sheep and Fasciola swine. It is mainly used for fascioliasis in sheep. Carbon tetrachloride has certain toxicity to livestock and poultry. Pigs and cattle are more sensitive to carbon tetrachloride. Improper use may cause poisoning. Acute poisoning mainly manifests as depression, movement disorders, muscle tremors, and difficulty breathing. Oral administration may cause damage to local tissues. It is irritating and often causes abdominal pain; chronic poisoning mainly manifests as liver damage, fatty liver or even liver lobular necrosis, and severe death. Therefore, it is rarely used now and is mostly replaced by highly efficient and low-toxic anthelmintic drugs. The internal dosage of carbon tetroxide is 2 ml for adult sheep and 1 ml for lambs. The dosage of carbon tetrachloride capsules is the same as before. When using carbon tetrachloride liquid paraffin injection, 4 ml is injected intramuscularly for adult sheep and 2 ml for lambs. Detoxification can be done by intravenous injection of calcium or hypertonic glucose.