1) Poisoning symptoms: acute poisoning occurs within 12 hours, and oral administration immediately occurs. Mild: headache, dizziness, nausea, vomiting, hyperhidrosis, weakness, chest tightness, blurred vision, poor appetite, etc., the whole blood cholinesterase activity generally decreased to 70-50% of the normal value, moderate: in addition to the above symptoms also appear mild dyspnea, muscle tremor, constriction of the pupils, trance, unsteady walking, sweating, salivating, abdominal pain, diarrhea. In severe cases, coma, convulsions, difficulty breathing, foaming at the mouth, incontinence, convulsions, and respiratory paralysis may occur. 2) If ingested or poisoned, take the poisoned person away from the scene, remove the poison, take off the contaminated clothes, and wash the skin or eyes immediately. Oral poisoning should be sent to the hospital immediately, immediately take vomiting, gastric lavage, catharsis and other emergency measures, detoxification can be atropine 1 ~ 5mg subcutaneous or intravenous injection (according to the severity of poisoning); Intravenous injection with praloxime 0.4-1.2g (depending on the severity of poisoning); Morphine, theophylline, phenothiazine and reserpine are prohibited. 3) Immediately wash eyes and skin with plenty of water for at least 15 minutes. If accidentally inhaled, immediately move the poisoned person to a place with fresh air, and consult a doctor for symptomatic treatment in severe cases. Skin and eyes must be washed with plenty of water after contamination. Wash with soapy water and clean water immediately after the skin poisoning, and wash with plenty of clean water for eye contamination.