For organophosphorus pesticide poisoning, the fluid usually used to wash the stomach can be saline, or a 2%-3% sodium bicarbonate solution. However, it is important to note that in the case of Metamucil poisoning, it is not possible to use an alkaline solution for gastric lavage. If the poison is of unknown origin, it is better to try to use water to wash the stomach. Organophosphorus pesticide poisoning should be careful when washing the stomach. First of all, the stomach should be pumped out of the capacity of the stomach, and then injected into the gastric lavage liquid, must also be repeated until the liquid becomes clean, clear, and no smell. Organophosphorus pesticide poisoning, usually some patients about a week after the gastric lavage will still have a smell, proving that the poison has not been clean, but also must be gastric lavage. In addition, after gastric lavage, can also be injected into the carbon suspension adsorption of poison or injection of magnesium sulfate, or mannitol diarrhea treatment.