I think the beans are undercooked. Poisoning caused by beans may be related to varieties, producing areas, seasons and cooking methods. According to the actual investigation of poisoning, improper cooking is the main cause of poisoning, and most of them are caused by insufficient cooking. Uncooked green beans contain saponin, which has strong irritation to digestive tract mucosa; In addition, immature beans may contain agglutinin, which has coagulation effect. Intake of undercooked beans, the incubation period of poisoning is a few 10 minutes, generally less than 5 hours, and the main symptoms are gastroenteritis, such as nausea, vomiting, abdominal pain and diarrhea. Vomiting ranges from a few times to dozens of times. There are also dizziness, headache, chest tightness, cold sweat and palpitation, and a burning sensation in the stomach. Most patients have high white blood cells and normal body temperature, and the course of disease is usually several hours or1~ 2 days. The treatment methods of bean poisoning are as follows: 1. Those with mild poisoning can heal themselves without treatment after vomiting and diarrhea. Because there is no specific medicine for bean poisoning at present, we can only take symptomatic treatment, such as vomiting, catharsis, gastric lavage, infusion, diuresis and other measures to eliminate poisons, so the poisoned person should still be sent to the hospital for treatment, and do not take drugs indiscriminately. 2, mild symptoms, just lie still and rest, can drink a small amount of boiled water or strong tea water many times (do not use heavy vomiting, stomach trouble or diabetes), if necessary, can take sedatives such as diazepam, hypnotic, etc. 3. Severe poisoning, if vomiting, dehydration, or hemolysis, should be promptly sent to the hospital for treatment. Reference Baidu.