Soymilk is a drink for all ages and can be drunk all season long. Soybean milk has high protein content and good quality, no less than fresh milk; the iron content is much more than fresh milk. Spring and autumn drinking soy milk, can nourish Yin and moisten dryness, and harmonize Yin and Yang; summer drinking soy milk, can eliminate heat and prevent summer heat, and quench thirst; winter drinking soy milk, can dispel cold and warm the stomach, nourishing tonic. Although soya bean milk is so good, but it has a defect is not boiled soya bean milk is not drinkable, the reason is that drinking such soya bean milk will cause poisoning. We not only ask why drinking unboiled soya bean milk can be poisonous? This is because soybeans contain cell agglutinins, saponins, protease inhibitors (such as specific substances that inhibit trypsin, chymotrypsin, pepsin, etc.), etc. When soy milk is not cooked thoroughly, the trypsin and saponin toxins contained in soy milk can irritate the stomach and intestines, thus causing nausea, vomiting, and some diarrhea. Severe cases can cause dehydration and electrolyte disturbances. Mild cases can generally heal themselves in 3 to 5 hours, and symptoms can last 1 to 2 days in severe cases. This shows how serious the consequences of drinking unboiled soy milk are. So how to avoid such a situation? Is that we should pay attention to the future when cooking soy milk, the pot of soy milk appears foam boiling, the temperature is only 80 to 90 ℃, which is a false boiling phenomenon. At this time, do not think that the soy milk has been cooked, in fact, this temperature can not yet be completely destroyed within the soy milk toxins. At this time should reduce the fire, so as not to spill soy milk, and then continue to boil for 5 to 10 minutes, in order to completely destroy the toxic substances within the soy milk. Drinking this kind of soy milk is never poisoning phenomenon, may rest assured to drink boldly, but also in moderation.