After the discovery of the patient nitrite poisoning, you need to first terminate the exposure to nitrite, and then quickly through gastric lavage, diarrhea, activated charcoal, methylene blue and other drugs for treatment. Found that there are patients with existing patient nitrite poisoning, must terminate the continued exposure to nitrite, at the same time, rapid first aid, in the water gastric lavage at the same time, give the patient oral magnesium sulfate diarrhea, to promote the discharge of poison, and then take activated charcoal, adsorption of unabsorbed nitrite in the stomach. At the same time, it is also necessary to apply special nitrite antidote, such as methylene blue, etc. for resuscitation. During the resuscitation period, attention needs to be paid to maintaining the patient’s water electrolyte and acid-base balance to prevent complications such as respiratory failure. It is also necessary to maintain high-flow oxygen inhalation and hyperbaric oxygen therapy if necessary. If you need to use drugs should be used under the guidance of a doctor, do not blindly use drugs, delay the rescue time, once the patient is found to be nitrite poisoning, must be sent to the hospital urgently.