Diquat is a pyridine-based inactivating herbicide. Once poisoned, the patient must be treated promptly and go to the hospital for gastric lavage and diarrhea, and be treated with infusion and rehydration, and the more timely the treatment, the better for the patient. And a lot of clinical research shows that the mortality rate of diquat poisoning is closely related to the dose. If a small dose of poisoning is given orally less than 20ml, the success rate of resuscitation can be as high as 87.5% through active clinical treatment. In the case of medium dose poisoning, that is, the oral dose is between 21-50ml, the success rate of clinical rescue is only 25%. If the poisoning is in large doses, that is, greater than 50ml, the clinicians will eventually die despite their best efforts to save the patient’s life by all means.