Generally, the symptoms of castor seed poisoning will gradually worsen after 12 hours, and the symptoms will be most severe after 24 hours, which may lead to death in a few days. The toxicity of castor seeds is caused by the ricin and ricinine contained in castor seeds, of which ricin is the most toxic, generally children can be poisoned to death if they eat 2-7 capsules, and adults can be killed if they eat about 20 capsules. The main clinical manifestations of ricin poisoning are headache, dizziness, nausea, vomiting, abdominal pain, diarrhea and other gastroenteritis manifestations, there will also be a rise in body temperature, an increase in whole blood leukocytes, as well as the blood picture of white blood cells, nuclear left shift, the patient can be oliguric or even anuric, the symptoms of renal failure, the patient can have cold sweats, and may even lead to shock and other symptoms of cardiovascular collapse. There is usually an incubation period of about 10 hours before the symptoms of poisoning appear, and serious symptoms will appear after the incubation period, and the symptoms will generally worsen after 12 hours, and serious syndromes such as convulsions, respiratory distress, corneal inversion, and central nervous system disorders will occur. After castor seed poisoning, patients can immediately stimulate the throat with fingers or other methods to induce vomiting, drink 500ml of water and then stimulate the throat to induce vomiting, repeatedly until clear water is vomited. Egg white, cold milk or cold rice soup can also be taken orally to protect the gastric mucosa.