Ginkgo biloba, commonly known as ginkgo biloba, consists of fleshy exocarp, bony mesocarp, membranous endosperm and seed kernel. It can be boiled or fried, and has the effects of eliminating phlegm, relieving cough, moistening lung and relieving asthma, but it can cause poisoning after being eaten in large quantities. Ginkgo biloba contains hydrocyanic acid toxin, which is very toxic. The toxicity is reduced after heating, and it is easier to be poisoned when eaten raw. The general poisoning dose is 10-50 capsules, and the poisoning symptoms appear at 1- 12 hours after eating ginkgo biloba. In order to prevent ginkgo poisoning, it is not advisable to eat more ginkgo, let alone eat ginkgo raw. This disease is more common among children.