Eat raw cassava or eat improperly processed cassava, will lead to human cyanide poisoning, cassava poisoning serious will kill. After eating cassava poisoning, we should immediately call the 120 emergency telephone, inform the patient is cassava poisoning, say clearly the patient to pick up the car location, send someone to pick up the ambulance, keep the phone open, do not occupy the line. Waiting for the ambulance to come, if the patient is awake, can cooperate, to immediately use the fingertips or spoon down the root of the tongue to induce vomiting, and then drink 300-500ml of water to induce vomiting, until vomit clean, vomit out of the water is clear; if the patient is confused, can not be cooperated with, don’t force to induce vomiting; conditions can be given to the patient high-flow oxygen; if the patient is convulsing, the patient will lead to patients around the object to move away, prevent the patient from being injured. If the patient is convulsing, move the objects around the patient that will cause the patient to be injured to prevent the patient from bumping and bruising; if the patient is in respiratory arrest, give the patient cardiopulmonary resuscitation in a timely manner. Emergency personnel will take over the patient after the patient will be given a needle infusion, with special antidotes, give gastric lavage, catheterization, breathing bad patients will be intubated and on the ventilator to help patients breathe.