Babies can add soybean products at around 10 months of age according to the normal complementary food addition procedure. If your baby’s gastrointestinal tract is acceptable, you can add soy milk, but you need to pay attention to two issues: First, your child must start with a small amount of soy milk when adding soy milk, because soy products are also factors that can easily cause allergies in children. After drinking soy milk may cause flatulence and poor gastrointestinal digestion; if the child once the digestive problems, it is not recommended to add soy milk at this time, you can wait until the child is one year old.