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Ginkgo nuts are commonly used in Korea for its antitussive and expectorant properties, as well as circulatory boosting effect and nutritive value. However, heir potential toxicities are not well-known. Symptoms of ginkgo nut intoxication include abdominal pain, nausea, vomiting, diarrhea, irritability, headaches, and seizure attacks or fatal status epilepticus. 4-O-methoxypyridoxine (MPN) in ginkgo nuts has been known to cause generalized seizures or status epilepticus. This report describes a case of ginkgo nut intoxication in a 12-year-old male. The patient was presented with vomiting and afebrile convulsion 7 hours after eating a large number of roasted gingko nuts.