The chemical name of paraquat is 1-1-dimethyl-4-4-bipyridine cationic salt, which is a kind of rapid inactivating herbicide with poisoning effect and some systemic effect. Paraquat is a large variety of non-selective herbicides, herbicidal effect is better, can make the ground weeds dry, commonly used in orchards, tea gardens, forest belts, crop fields and so on, it is safe for crops, because Paraquat and the soil will lose activity after contact, no residue when the soil is passivated. Paraquat is harmful to human body, if taken by mistake, it mainly has obvious effect on the central nervous system of human body, and the symptoms that may appear are mental abnormality, unsteady gait, cerebral hemorrhage, hand tremor, even cerebral infarction and brain abscess. So paraquat is particularly toxic to humans, and the mortality rate after taking paraquat is particularly high. Paraquat poisoning prognosis is very poor, the mortality rate is very high, at present we have no effective antidote drugs in the treatment, mainly symptomatic treatment and maintenance of vital signs, you can vomit gastric lavage and diarrhea, blood purification treatment. If you take paraquat by mistake, you should seek immediate medical treatment.