Cyanide poisoning is usually categorized into inhalation poisoning and oral poisoning. If it is inhalation poisoning, you should immediately get out of the scene of the environment, take off the clothes on the body, with water repeatedly rinse clean eyes, nasal cavity, mouth, and then immediately sent to the hospital for emergency treatment. If it is oral poisoning, the patient is awake, should be given immediately at the scene of the throat to induce vomiting, try to drink the cyanide spit out of the body. After arriving at the hospital, you can usually apply sodium nitrite and sodium thiosulfate, both of which have a targeted effect on cyanide poisoning. In addition to symptomatic treatment, close observation of the condition, if there is shallow breathing or respiratory or cardiac arrest, CPR should be given immediately.