Naphthalene poisoning is usually divided into inhalation poisoning and oral poisoning. In case of inhalation poisoning, the first thing to do is to get out of the scene immediately, move to a ventilated and airy environment, give oxygen if possible, and rinse the residue in the mouth and nasal cavity with water, and then send the patient to the hospital immediately for rescue treatment. In case of oral poisoning, if the patient is conscious, immediately give vomiting treatment to expel the poison from the body as soon as possible, then rinse the mouth clean and send it to the hospital immediately. After being sent to the hospital, if the patient is orally poisoned, gastric lavage must usually be continued, and the solution for gastric lavage can be warm boiled water, or 2% sodium bicarbonate solution or potassium permanganate solution. After gastric lavage can also choose the method of drainage, as soon as possible to the residual toxic substances out of the body, can apply magnesium sulfate to induce diarrhea. Next is the symptomatic treatment is the main, can drink more water, more fluid, as soon as possible to metabolize the toxic substances. In addition, the liver and kidney function must be protected as well as blood transfusion treatment, blood transfusion is recommended to transfuse fresh blood.