The herbicides listed paraquat commonly used in industrial agricultural use of herbicides. Paraquart often found in contaminated water and food for the example in case from toxicology of Ramathibodi Hospital is mistook a bottle of drinking water. After eating paraquart into the body in case of poisoning by paraquart a local effect due to paraquart corrosive. The symptoms of sore throat, systemic toxicity is often delayed. In severe poisoning condition I usually kidney failure.