There are certain dangers if rat poison is accidentally ingested without timely treatment. Rodenticide species are more, the toxic effect varies, but generally speaking more toxic, more harmful to humans, and even a serious threat to life. Rodenticides currently have a considerable number of species lack of toxicological analysis means and special antidote. Therefore, early knowledge of the exposure history and oral history is still an effective means of diagnosis. Early and correct treatment has a positive significance for the symptom control and prognosis of the poisoned person.