Bitter almonds are poisonous, bitter almonds tip and skin containing hydrocyanic acid toxic ingredients raw almonds have a toxic component called cyanogenic glycosides, which can be hydrolyzed in the gastrointestinal tract to release the highly toxic component hydrocyanic acid. Hydrocyanic acid can be quickly absorbed into the blood circulation, the role of all parts of the human body cells, so that the cells can not be normal respiration, the organization of the general lack of oxygen. Hydrocyanic acid acts on the respiratory and cardiovascular centers, causing paralysis of these centers and death. And because of the toxicity of hydrocyanic acid, some teenagers will be poisoned if they eat a grain out of good curiosity. Bitter almond poisoning usually begins about 1 hour after eating, mainly showing neurotoxic symptoms. Initially vomiting, nausea, headache; then palpitations, chest tightness, general weakness; finally often due to respiratory paralysis and death. In addition to bitter almonds, raw plum kernels, peach kernels can also cause the same poisoning symptoms. Once found bitter almond poisoning should be immediately sent to the hospital for treatment. If the distance is long, it is best to wash the stomach first. Doctors usually use sodium nitrite, sodium thiosulfate and other antidotes to detoxify the poison, and at the same time to strengthen the heart and excitation of the respiratory center and other ways of first aid, if not timely treatment will lead to fatal accidents.