One-and-a-half-year-old babies can drink soybean milk, which contains soybean isoflavones, calcium and other nutrients. Drinking in moderation is good for your child's health, but you must pay attention to drinking in moderation and don't drink too much at once, otherwise it will easily lead to bloating and diarrhea. The baby's diet should be balanced, eat less and eat more, and any diet should not be excessive, so as not to increase the burden on the stomach.