Treatment of organophosphorus poisoning includes removal of poisons, respiratory support, and application of antidotes. 1. Remove poisons: evacuate the patient from the scene of poisoning. Remove unabsorbed poisons, such as removing contaminated clothes, washing contaminated skin, hair and nails with water to reduce the absorption of organophosphorus. Patients who have taken the poison by mistake can use water, 2% sodium bicarbonate solution (prohibited for metronidazole poisoning), etc. to carry out repeated gastric lavage until the washed out liquid is clear. 2. Respiratory support: Ensure the smoothness of the respiratory tract, remove respiratory secretions, give oxygen inhalation, and use mechanical ventilation and ventilator-assisted respiration if necessary. 3. Application of antidote drugs: cholinesterase reviving drugs can be used, such as chlorhexidine, which can be given repeatedly. Choline receptor blocker can be used, such as atropine, if the pupil is obviously enlarged, confusion, convulsions, etc., it is atropine poisoning, need to stop atropine immediately. Organophosphorus poisoning need to seek medical treatment in time to avoid delaying the condition, and the drugs need to be used under the guidance of professional doctors.